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Finding the Fourth Proportional to 12,321.92, 17,001.87 and 7,542.95

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Solution

The fourth proportional to 12,321.92, 17,001.87 and 7,542.95 is: 10,407.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.92 : 17,001.87 = 7,542.95 : x
  2. Step 2: Convert to fraction form
    12,321.92/17,001.87 = 7,542.95/x
  3. Step 3: Cross multiply
    12,321.92x = 17,001.87 × 7,542.95
  4. Step 4: Simplify right side
    12,321.92x = 128,244,170.31
  5. Step 5: Solve for x
    x = 128,244,170.31/12,321.92
  6. Step 6: Final answer
    x = 10,407.81

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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.