21.57 is what percent of 23.51 - 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 23.51 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 23.51, so we can write it down as 100%=23.51.
4. We know, that x% equals 21.57 of the output value, so we can write it down as x%=21.57.
5. Now we have two simple equations:
1) 100%=23.51
2) x%=21.57
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%=23.51/21.57
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 21.57 is what percent of 23.51

100%/x%=23.51/21.57
(100/x)*x=(23.51/21.57)*x       - we multiply both sides of the equation by x
100=1.089939731108*x       - we divide both sides of the equation by (1.089939731108) to get x
100/1.089939731108=x
91.748192258613=x
x=91.748192258613

now we have:
21.57 is 91.748192258613% of 23.51