To create a proportion in the form of %/100 = is/of for the problem "15 is 1 1/2% of what number?", we can break it down as follows:
- Convert 1 1/2% to a decimal or an improper fraction.
- 1 1/2% = 1.5% = 1.5/100 or 1.5.
- Identify each part for the proportion:
- % = 1.5
- is = 15
- of = unknown number (let's call it x)
The proportion can be set up as:
\[ \frac{1.5}{100} = \frac{15}{x} \]
So the complete answer would be:
\[ \frac{1.5}{100} = \frac{15}{x} \]
Now you can use this proportion to solve for x, if needed.