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Finding the Fourth Proportional to 12,469.68, 18,691.14 and 6,217.32

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Solution

The fourth proportional to 12,469.68, 18,691.14 and 6,217.32 is: 9,319.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,469.68 : 18,691.14 = 6,217.32 : x
  2. Step 2: Convert to fraction form
    12,469.68/18,691.14 = 6,217.32/x
  3. Step 3: Cross multiply
    12,469.68x = 18,691.14 × 6,217.32
  4. Step 4: Simplify right side
    12,469.68x = 116,208,798.54
  5. Step 5: Solve for x
    x = 116,208,798.54/12,469.68
  6. Step 6: Final answer
    x = 9,319.31

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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.