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Finding the Fourth Proportional to 27,171.60, 40,757.40 and 20,610.60

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Solution

The fourth proportional to 27,171.60, 40,757.40 and 20,610.60 is: 30,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,171.60 : 40,757.40 = 20,610.60 : x
  2. Step 2: Convert to fraction form
    27,171.60/40,757.40 = 20,610.60/x
  3. Step 3: Cross multiply
    27,171.60x = 40,757.40 × 20,610.60
  4. Step 4: Simplify right side
    27,171.60x = 840,034,468.44
  5. Step 5: Solve for x
    x = 840,034,468.44/27,171.60
  6. Step 6: Final answer
    x = 30,915.90

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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.