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Finding the Fourth Proportional to 18,115.26, 27,167.42 and 6,425.76

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Solution

The fourth proportional to 18,115.26, 27,167.42 and 6,425.76 is: 9,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.26 : 27,167.42 = 6,425.76 : x
  2. Step 2: Convert to fraction form
    18,115.26/27,167.42 = 6,425.76/x
  3. Step 3: Cross multiply
    18,115.26x = 27,167.42 × 6,425.76
  4. Step 4: Simplify right side
    18,115.26x = 174,571,320.74
  5. Step 5: Solve for x
    x = 174,571,320.74/18,115.26
  6. Step 6: Final answer
    x = 9,636.70

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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.