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Finding the Fourth Proportional to 17,139.18, 25,656.92 and 15,843.18

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Solution

The fourth proportional to 17,139.18, 25,656.92 and 15,843.18 is: 23,716.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.18 : 25,656.92 = 15,843.18 : x
  2. Step 2: Convert to fraction form
    17,139.18/25,656.92 = 15,843.18/x
  3. Step 3: Cross multiply
    17,139.18x = 25,656.92 × 15,843.18
  4. Step 4: Simplify right side
    17,139.18x = 406,487,201.81
  5. Step 5: Solve for x
    x = 406,487,201.81/17,139.18
  6. Step 6: Final answer
    x = 23,716.84

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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.