21.23 is what percent of 1639.75 - 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 1639.75 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 1639.75, so we can write it down as 100%=1639.75.
4. We know, that x% equals 21.23 of the output value, so we can write it down as x%=21.23.
5. Now we have two simple equations:
1) 100%=1639.75
2) x%=21.23
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%=1639.75/21.23
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 21.23 is what percent of 1639.75

100%/x%=1639.75/21.23
(100/x)*x=(1639.75/21.23)*x       - we multiply both sides of the equation by x
100=77.237399905794*x       - we divide both sides of the equation by (77.237399905794) to get x
100/77.237399905794=x
1.2947095593841=x
x=1.2947095593841

now we have:
21.23 is 1.2947095593841% of 1639.75