20.36 is what percent of 648 - 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 648 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 648, so we can write it down as 100%=648.
4. We know, that x% equals 20.36 of the output value, so we can write it down as x%=20.36.
5. Now we have two simple equations:
1) 100%=648
2) x%=20.36
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%=648/20.36
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 20.36 is what percent of 648

100%/x%=648/20.36
(100/x)*x=(648/20.36)*x       - we multiply both sides of the equation by x
100=31.827111984283*x       - we divide both sides of the equation by (31.827111984283) to get x
100/31.827111984283=x
3.141975308642=x
x=3.141975308642

now we have:
20.36 is 3.141975308642% of 648