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Finding the Fourth Proportional to 26,659.01, 40,013.12 and 13,520.61

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Solution

The fourth proportional to 26,659.01, 40,013.12 and 13,520.61 is: 20,293.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,659.01 : 40,013.12 = 13,520.61 : x
  2. Step 2: Convert to fraction form
    26,659.01/40,013.12 = 13,520.61/x
  3. Step 3: Cross multiply
    26,659.01x = 40,013.12 × 13,520.61
  4. Step 4: Simplify right side
    26,659.01x = 541,001,824.20
  5. Step 5: Solve for x
    x = 541,001,824.20/26,659.01
  6. Step 6: Final answer
    x = 20,293.39

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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.