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Finding the Fourth Proportional to 17,164.20, 25,731.90 and 8,956.20

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Solution

The fourth proportional to 17,164.20, 25,731.90 and 8,956.20 is: 13,426.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,164.20 : 25,731.90 = 8,956.20 : x
  2. Step 2: Convert to fraction form
    17,164.20/25,731.90 = 8,956.20/x
  3. Step 3: Cross multiply
    17,164.20x = 25,731.90 × 8,956.20
  4. Step 4: Simplify right side
    17,164.20x = 230,460,042.78
  5. Step 5: Solve for x
    x = 230,460,042.78/17,164.20
  6. Step 6: Final answer
    x = 13,426.79

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.