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Finding the Fourth Proportional to 11,958.87, 17,938.17 and 4,167.66

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Solution

The fourth proportional to 11,958.87, 17,938.17 and 4,167.66 is: 6,251.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.87 : 17,938.17 = 4,167.66 : x
  2. Step 2: Convert to fraction form
    11,958.87/17,938.17 = 4,167.66/x
  3. Step 3: Cross multiply
    11,958.87x = 17,938.17 × 4,167.66
  4. Step 4: Simplify right side
    11,958.87x = 74,760,193.58
  5. Step 5: Solve for x
    x = 74,760,193.58/11,958.87
  6. Step 6: Final answer
    x = 6,251.44

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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.