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Finding the Fourth Proportional to 15,327.12, 22,978.28 and 4,791.72

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Solution

The fourth proportional to 15,327.12, 22,978.28 and 4,791.72 is: 7,183.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.12 : 22,978.28 = 4,791.72 : x
  2. Step 2: Convert to fraction form
    15,327.12/22,978.28 = 4,791.72/x
  3. Step 3: Cross multiply
    15,327.12x = 22,978.28 × 4,791.72
  4. Step 4: Simplify right side
    15,327.12x = 110,105,402.44
  5. Step 5: Solve for x
    x = 110,105,402.44/15,327.12
  6. Step 6: Final answer
    x = 7,183.70

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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.