17.9 is what percent of 83.7 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 83.7 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 83.7, so we can write it down as 100%=83.7.
4. We know, that x% equals 17.9 of the output value, so we can write it down as x%=17.9.
5. Now we have two simple equations:
1) 100%=83.7
2) x%=17.9
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=83.7/17.9
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 17.9 is what percent of 83.7

100%/x%=83.7/17.9
(100/x)*x=(83.7/17.9)*x       - we multiply both sides of the equation by x
100=4.6759776536313*x       - we divide both sides of the equation by (4.6759776536313) to get x
100/4.6759776536313=x
21.385902031063=x
x=21.385902031063

now we have:
17.9 is 21.385902031063% of 83.7