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Finding the Fourth Proportional to 14,957.52, 20,641.68 and 8,243.28

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Solution

The fourth proportional to 14,957.52, 20,641.68 and 8,243.28 is: 11,375.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,957.52 : 20,641.68 = 8,243.28 : x
  2. Step 2: Convert to fraction form
    14,957.52/20,641.68 = 8,243.28/x
  3. Step 3: Cross multiply
    14,957.52x = 20,641.68 × 8,243.28
  4. Step 4: Simplify right side
    14,957.52x = 170,155,147.91
  5. Step 5: Solve for x
    x = 170,155,147.91/14,957.52
  6. Step 6: Final answer
    x = 11,375.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.