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Finding the Fourth Proportional to 18,374,469.10, 27,561,703.65 and 12,894,721.90

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Solution

The fourth proportional to 18,374,469.10, 27,561,703.65 and 12,894,721.90 is: 19,342,082.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374,469.10 : 27,561,703.65 = 12,894,721.90 : x
  2. Step 2: Convert to fraction form
    18,374,469.10/27,561,703.65 = 12,894,721.90/x
  3. Step 3: Cross multiply
    18,374,469.10x = 27,561,703.65 × 12,894,721.90
  4. Step 4: Simplify right side
    18,374,469.10x = 355,400,503,656,964.94
  5. Step 5: Solve for x
    x = 355,400,503,656,964.94/18,374,469.10
  6. Step 6: Final answer
    x = 19,342,082.85

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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.