15 is what percent of 21?

When you ask "15 is what percent of 21?" you are asking what share per hundred (percent) 15 is of 21 (15 is what % of 21?). To show you how to calculate the answer we start by displaying the percent formula below:

		Whole × Percent
		100

= Part

In the problem "15 is what percent of 21?", 15 is the Part, 21 is the Whole, and Percent is what we are solving. When we enter the Whole and the Part in our formula, we get this:

		21 × Percent
		100

= 15

To solve for Percent, we first multiply both sides by 100 to get rid of the denominator on the left side:

		21 × Percent × 100
		100

= 15 × 100

21 × Percent

= 1500

Next, we divide both sides by 21 to get Percent by itself on the left side:

		21 × Percent
		21

		1500
		21

Percent =

		1500
		21

That's it! Above is the fractional answer to "15 is what percent of 21?". To get the decimal answer, you simply divide the numerator by the denominator. Thus, here is the final answer to "15 is what percent of 21?" in decimal percent form:

1500/21
= 71.4285714285714
≈ 71.4286%

Is What Percent of Calculator
Here you can submit another problem for us to solve:

15 is what percent of 22?
Want to learn more? Here is the next problem on our list.