Finding the Fourth Proportional to 18,468,830.80, 27,703,246.20 and 8,391,134.80
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Solution
The fourth proportional to 18,468,830.80, 27,703,246.20 and 8,391,134.80 is: 12,586,702.20
Step by Step Solution
- Step 1: Write the proportion equation
18,468,830.80 : 27,703,246.20 = 8,391,134.80 : x - Step 2: Convert to fraction form
18,468,830.80/27,703,246.20 = 8,391,134.80/x - Step 3: Cross multiply
18,468,830.80x = 27,703,246.20 × 8,391,134.80 - Step 4: Simplify right side
18,468,830.80x = 232,461,673,261,787.78 - Step 5: Solve for x
x = 232,461,673,261,787.78/18,468,830.80 - Step 6: Final answer
x = 12,586,702.20
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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.