On the blueprints of their new home, Paul and gertha notice the balcony is 9 inches long and 4 inches wide they know that the actual balcony will be 15.3 ft long. How wide will the balcony be?

We can solve this with a proportion

width on blueprint / length on blueprint = x / actual length

4/9 = x / 15.3 cross-multiply

15.3 *4 = 9x simplify

61.2 = 9x divide both sides by 9

6.8 in = the width