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Finding the Fourth Proportional to 12,725.57, 17,550.57 and 8,188.97

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Solution

The fourth proportional to 12,725.57, 17,550.57 and 8,188.97 is: 11,293.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.57 : 17,550.57 = 8,188.97 : x
  2. Step 2: Convert to fraction form
    12,725.57/17,550.57 = 8,188.97/x
  3. Step 3: Cross multiply
    12,725.57x = 17,550.57 × 8,188.97
  4. Step 4: Simplify right side
    12,725.57x = 143,721,034.17
  5. Step 5: Solve for x
    x = 143,721,034.17/12,725.57
  6. Step 6: Final answer
    x = 11,293.88

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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.