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Finding the Fourth Proportional to 17,138.80, 25,708.20 and 11,233.90

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Solution

The fourth proportional to 17,138.80, 25,708.20 and 11,233.90 is: 16,850.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,138.80 : 25,708.20 = 11,233.90 : x
  2. Step 2: Convert to fraction form
    17,138.80/25,708.20 = 11,233.90/x
  3. Step 3: Cross multiply
    17,138.80x = 25,708.20 × 11,233.90
  4. Step 4: Simplify right side
    17,138.80x = 288,803,347.98
  5. Step 5: Solve for x
    x = 288,803,347.98/17,138.80
  6. Step 6: Final answer
    x = 16,850.85

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Similar ratio
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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.