Finding the Fourth Proportional to 18,887,721.20, 28,331,581.80 and 6,117,390.80
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Solution
The fourth proportional to 18,887,721.20, 28,331,581.80 and 6,117,390.80 is: 9,176,086.20
Step by Step Solution
- Step 1: Write the proportion equation
18,887,721.20 : 28,331,581.80 = 6,117,390.80 : x - Step 2: Convert to fraction form
18,887,721.20/28,331,581.80 = 6,117,390.80/x - Step 3: Cross multiply
18,887,721.20x = 28,331,581.80 × 6,117,390.80 - Step 4: Simplify right side
18,887,721.20x = 173,315,357,852,767.44 - Step 5: Solve for x
x = 173,315,357,852,767.44/18,887,721.20 - Step 6: Final answer
x = 9,176,086.20
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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.