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Finding the Fourth Proportional to 17,167.20, 25,736.40 and 8,959.20

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Solution

The fourth proportional to 17,167.20, 25,736.40 and 8,959.20 is: 13,431.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,167.20 : 25,736.40 = 8,959.20 : x
  2. Step 2: Convert to fraction form
    17,167.20/25,736.40 = 8,959.20/x
  3. Step 3: Cross multiply
    17,167.20x = 25,736.40 × 8,959.20
  4. Step 4: Simplify right side
    17,167.20x = 230,577,554.88
  5. Step 5: Solve for x
    x = 230,577,554.88/17,167.20
  6. Step 6: Final answer
    x = 13,431.28

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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.