Finding the Fourth Proportional to 22,486,620.20, 31,031,605.74 and 12,173,318.69
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Solution
The fourth proportional to 22,486,620.20, 31,031,605.74 and 12,173,318.69 is: 16,799,217.61
Step by Step Solution
- Step 1: Write the proportion equation
22,486,620.20 : 31,031,605.74 = 12,173,318.69 : x - Step 2: Convert to fraction form
22,486,620.20/31,031,605.74 = 12,173,318.69/x - Step 3: Cross multiply
22,486,620.20x = 31,031,605.74 × 12,173,318.69 - Step 4: Simplify right side
22,486,620.20x = 377,757,626,025,945.19 - Step 5: Solve for x
x = 377,757,626,025,945.19/22,486,620.20 - Step 6: Final answer
x = 16,799,217.61
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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.