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Finding the Fourth Proportional to 29,167.50, 40,251.15 and 15,919.50

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Solution

The fourth proportional to 29,167.50, 40,251.15 and 15,919.50 is: 21,968.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,167.50 : 40,251.15 = 15,919.50 : x
  2. Step 2: Convert to fraction form
    29,167.50/40,251.15 = 15,919.50/x
  3. Step 3: Cross multiply
    29,167.50x = 40,251.15 × 15,919.50
  4. Step 4: Simplify right side
    29,167.50x = 640,778,182.43
  5. Step 5: Solve for x
    x = 640,778,182.43/29,167.50
  6. Step 6: Final answer
    x = 21,968.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.