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Finding the Fourth Proportional to 19,171.52, 28,760.91 and 7,484

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Solution

The fourth proportional to 19,171.52, 28,760.91 and 7,484 is: 11,227.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171.52 : 28,760.91 = 7,484 : x
  2. Step 2: Convert to fraction form
    19,171.52/28,760.91 = 7,484/x
  3. Step 3: Cross multiply
    19,171.52x = 28,760.91 × 7,484
  4. Step 4: Simplify right side
    19,171.52x = 215,246,650.44
  5. Step 5: Solve for x
    x = 215,246,650.44/19,171.52
  6. Step 6: Final answer
    x = 11,227.42

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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.