Home / 12,217.38-18,327.42-3,897.78

Finding the Fourth Proportional to 12,217.38, 18,327.42 and 3,897.78

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Solution

The fourth proportional to 12,217.38, 18,327.42 and 3,897.78 is: 5,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.38 : 18,327.42 = 3,897.78 : x
  2. Step 2: Convert to fraction form
    12,217.38/18,327.42 = 3,897.78/x
  3. Step 3: Cross multiply
    12,217.38x = 18,327.42 × 3,897.78
  4. Step 4: Simplify right side
    12,217.38x = 71,436,251.13
  5. Step 5: Solve for x
    x = 71,436,251.13/12,217.38
  6. Step 6: Final answer
    x = 5,847.10

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1.5x scale

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.