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Finding the Fourth Proportional to 18,492,092.20, 27,738,138.30 and 8,394,713.20

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Solution

The fourth proportional to 18,492,092.20, 27,738,138.30 and 8,394,713.20 is: 12,592,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492,092.20 : 27,738,138.30 = 8,394,713.20 : x
  2. Step 2: Convert to fraction form
    18,492,092.20/27,738,138.30 = 8,394,713.20/x
  3. Step 3: Cross multiply
    18,492,092.20x = 27,738,138.30 × 8,394,713.20
  4. Step 4: Simplify right side
    18,492,092.20x = 232,853,715,730,435.53
  5. Step 5: Solve for x
    x = 232,853,715,730,435.53/18,492,092.20
  6. Step 6: Final answer
    x = 12,592,069.80

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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.