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Finding the Fourth Proportional to 13,591.92, 18,747.37 and 13,134.71

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Solution

The fourth proportional to 13,591.92, 18,747.37 and 13,134.71 is: 18,116.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.92 : 18,747.37 = 13,134.71 : x
  2. Step 2: Convert to fraction form
    13,591.92/18,747.37 = 13,134.71/x
  3. Step 3: Cross multiply
    13,591.92x = 18,747.37 × 13,134.71
  4. Step 4: Simplify right side
    13,591.92x = 246,241,152.16
  5. Step 5: Solve for x
    x = 246,241,152.16/13,591.92
  6. Step 6: Final answer
    x = 18,116.73

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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.