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Finding the Fourth Proportional to 12,131.52, 16,737.12 and 8,600.64

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Solution

The fourth proportional to 12,131.52, 16,737.12 and 8,600.64 is: 11,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.52 : 16,737.12 = 8,600.64 : x
  2. Step 2: Convert to fraction form
    12,131.52/16,737.12 = 8,600.64/x
  3. Step 3: Cross multiply
    12,131.52x = 16,737.12 × 8,600.64
  4. Step 4: Simplify right side
    12,131.52x = 143,949,943.76
  5. Step 5: Solve for x
    x = 143,949,943.76/12,131.52
  6. Step 6: Final answer
    x = 11,865.78

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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.