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Finding the Fourth Proportional to 17,921.12, 24,730.18 and 9,963.18

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Solution

The fourth proportional to 17,921.12, 24,730.18 and 9,963.18 is: 13,748.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.12 : 24,730.18 = 9,963.18 : x
  2. Step 2: Convert to fraction form
    17,921.12/24,730.18 = 9,963.18/x
  3. Step 3: Cross multiply
    17,921.12x = 24,730.18 × 9,963.18
  4. Step 4: Simplify right side
    17,921.12x = 246,391,209.86
  5. Step 5: Solve for x
    x = 246,391,209.86/17,921.12
  6. Step 6: Final answer
    x = 13,748.65

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