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Finding the Fourth Proportional to 18,443,422.90, 27,681,864.90 and 9,351,845.20

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Solution

The fourth proportional to 18,443,422.90, 27,681,864.90 and 9,351,845.20 is: 14,036,251.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443,422.90 : 27,681,864.90 = 9,351,845.20 : x
  2. Step 2: Convert to fraction form
    18,443,422.90/27,681,864.90 = 9,351,845.20/x
  3. Step 3: Cross multiply
    18,443,422.90x = 27,681,864.90 × 9,351,845.20
  4. Step 4: Simplify right side
    18,443,422.90x = 258,876,515,392,113.44
  5. Step 5: Solve for x
    x = 258,876,515,392,113.44/18,443,422.90
  6. Step 6: Final answer
    x = 14,036,251.12

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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.