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Finding the Fourth Proportional to 12,761.92, 19,149.36 and 6,605.92

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Solution

The fourth proportional to 12,761.92, 19,149.36 and 6,605.92 is: 9,912.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.92 : 19,149.36 = 6,605.92 : x
  2. Step 2: Convert to fraction form
    12,761.92/19,149.36 = 6,605.92/x
  3. Step 3: Cross multiply
    12,761.92x = 19,149.36 × 6,605.92
  4. Step 4: Simplify right side
    12,761.92x = 126,499,140.21
  5. Step 5: Solve for x
    x = 126,499,140.21/12,761.92
  6. Step 6: Final answer
    x = 9,912.23

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1.5x scale

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.