Finding the Fourth Proportional to 12,272,785.92, 16,932,691.50 and 7,115,118.24
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Solution
The fourth proportional to 12,272,785.92, 16,932,691.50 and 7,115,118.24 is: 9,816,687.34
Step by Step Solution
- Step 1: Write the proportion equation
12,272,785.92 : 16,932,691.50 = 7,115,118.24 : x - Step 2: Convert to fraction form
12,272,785.92/16,932,691.50 = 7,115,118.24/x - Step 3: Cross multiply
12,272,785.92x = 16,932,691.50 × 7,115,118.24 - Step 4: Simplify right side
12,272,785.92x = 120,478,102,143,942.97 - Step 5: Solve for x
x = 120,478,102,143,942.97/12,272,785.92 - Step 6: Final answer
x = 9,816,687.34
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.