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Finding the Fourth Proportional to 14,757.16, 20,364.42 and 8,469.40

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Solution

The fourth proportional to 14,757.16, 20,364.42 and 8,469.40 is: 11,687.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,757.16 : 20,364.42 = 8,469.40 : x
  2. Step 2: Convert to fraction form
    14,757.16/20,364.42 = 8,469.40/x
  3. Step 3: Cross multiply
    14,757.16x = 20,364.42 × 8,469.40
  4. Step 4: Simplify right side
    14,757.16x = 172,474,418.75
  5. Step 5: Solve for x
    x = 172,474,418.75/14,757.16
  6. Step 6: Final answer
    x = 11,687.51

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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.