Finding the Fourth Proportional to 12,478,691.20, 18,732,033.60 and 9,651,337.60
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Solution
The fourth proportional to 12,478,691.20, 18,732,033.60 and 9,651,337.60 is: 14,487,831.88
Step by Step Solution
- Step 1: Write the proportion equation
12,478,691.20 : 18,732,033.60 = 9,651,337.60 : x - Step 2: Convert to fraction form
12,478,691.20/18,732,033.60 = 9,651,337.60/x - Step 3: Cross multiply
12,478,691.20x = 18,732,033.60 × 9,651,337.60 - Step 4: Simplify right side
12,478,691.20x = 180,789,180,208,143.38 - Step 5: Solve for x
x = 180,789,180,208,143.38/12,478,691.20 - Step 6: Final answer
x = 14,487,831.88
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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.