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Finding the Fourth Proportional to 29,168, 43,752 and 12,517.28

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Solution

The fourth proportional to 29,168, 43,752 and 12,517.28 is: 18,775.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,168 : 43,752 = 12,517.28 : x
  2. Step 2: Convert to fraction form
    29,168/43,752 = 12,517.28/x
  3. Step 3: Cross multiply
    29,168x = 43,752 × 12,517.28
  4. Step 4: Simplify right side
    29,168x = 547,656,034.56
  5. Step 5: Solve for x
    x = 547,656,034.56/29,168
  6. Step 6: Final answer
    x = 18,775.92

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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.