Finding the Fourth Proportional to 18,887,470.20, 28,331,205.30 and 14,777,659.80
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Solution
The fourth proportional to 18,887,470.20, 28,331,205.30 and 14,777,659.80 is: 22,166,489.70
Step by Step Solution
- Step 1: Write the proportion equation
18,887,470.20 : 28,331,205.30 = 14,777,659.80 : x - Step 2: Convert to fraction form
18,887,470.20/28,331,205.30 = 14,777,659.80/x - Step 3: Cross multiply
18,887,470.20x = 28,331,205.30 × 14,777,659.80 - Step 4: Simplify right side
18,887,470.20x = 418,668,913,647,357 - Step 5: Solve for x
x = 418,668,913,647,357/18,887,470.20 - Step 6: Final answer
x = 22,166,489.70
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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.