Let the required number be x, then to create a proportion using the form
[tex] \frac{\%}{100} = \frac{is}{of} [/tex]
Thus, let 15 be [tex]1 \frac{1}{2} \%[/tex] of x, then
[tex] \frac{1 \frac{1}{2}}{100} = \frac{15}{x} \\ \\ \frac{ \frac{3}{2} }{100} =\frac{15}{x} \\ \\ \frac{3}{2}x=1,500 \\ \\ x= \frac{1,500\times2}{3} =1,000[/tex]
Therefore, 15 is [tex]1 \frac{1}{2} \%[/tex] of 1,000
