Reduce Ratio 9:21

Here we will reduce the ratio 9:21 as much as possible. In other words, we will make the numbers 9 and 21 as low as they can be while still keeping the same ratio between the two numbers.

To do this we find the largest number that both 9 and 21 can be divided by. Then we divide both 9 and 21 by that number to get the new reduced ratio.

The largest number 9 and 21 can be divided by is 3. When we divide both numbers by 3, we get the new reduced ratio as follows:

3:7

To summarize, the ratio 9:21 reduced as much as possible is 3:7. You could also say that the ratio 9:21 equals 3:7.

Ratio Reducer
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Reduce Ratio 9:22
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