18.7 is what percent of 3890 - 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 3890 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 3890, so we can write it down as 100%=3890.
4. We know, that x% equals 18.7 of the output value, so we can write it down as x%=18.7.
5. Now we have two simple equations:
1) 100%=3890
2) x%=18.7
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%=3890/18.7
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 18.7 is what percent of 3890

100%/x%=3890/18.7
(100/x)*x=(3890/18.7)*x       - we multiply both sides of the equation by x
100=208.02139037433*x       - we divide both sides of the equation by (208.02139037433) to get x
100/208.02139037433=x
0.48071979434447=x
x=0.48071979434447

now we have:
18.7 is 0.48071979434447% of 3890