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Finding the Fourth Proportional to 12,469.68, 18,704.52 and 3,704.58

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Solution

The fourth proportional to 12,469.68, 18,704.52 and 3,704.58 is: 5,556.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,469.68 : 18,704.52 = 3,704.58 : x
  2. Step 2: Convert to fraction form
    12,469.68/18,704.52 = 3,704.58/x
  3. Step 3: Cross multiply
    12,469.68x = 18,704.52 × 3,704.58
  4. Step 4: Simplify right side
    12,469.68x = 69,292,390.70
  5. Step 5: Solve for x
    x = 69,292,390.70/12,469.68
  6. Step 6: Final answer
    x = 5,556.87

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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.