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Finding the Fourth Proportional to 13,627.92, 20,431.02 and 12,534.48

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Solution

The fourth proportional to 13,627.92, 20,431.02 and 12,534.48 is: 18,791.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,627.92 : 20,431.02 = 12,534.48 : x
  2. Step 2: Convert to fraction form
    13,627.92/20,431.02 = 12,534.48/x
  3. Step 3: Cross multiply
    13,627.92x = 20,431.02 × 12,534.48
  4. Step 4: Simplify right side
    13,627.92x = 256,092,211.57
  5. Step 5: Solve for x
    x = 256,092,211.57/13,627.92
  6. Step 6: Final answer
    x = 18,791.73

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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.