Finding the Fourth Proportional to 18,489,489.96, 27,711,519.96 and 10,385,430.24
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Solution
The fourth proportional to 18,489,489.96, 27,711,519.96 and 10,385,430.24 is: 15,565,386.50
Step by Step Solution
- Step 1: Write the proportion equation
18,489,489.96 : 27,711,519.96 = 10,385,430.24 : x - Step 2: Convert to fraction form
18,489,489.96/27,711,519.96 = 10,385,430.24/x - Step 3: Cross multiply
18,489,489.96x = 27,711,519.96 × 10,385,430.24 - Step 4: Simplify right side
18,489,489.96x = 287,796,057,388,947.62 - Step 5: Solve for x
x = 287,796,057,388,947.62/18,489,489.96 - Step 6: Final answer
x = 15,565,386.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.