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Finding the Fourth Proportional to 17,138.18, 25,655.42 and 15,842.18

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Solution

The fourth proportional to 17,138.18, 25,655.42 and 15,842.18 is: 23,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,138.18 : 25,655.42 = 15,842.18 : x
  2. Step 2: Convert to fraction form
    17,138.18/25,655.42 = 15,842.18/x
  3. Step 3: Cross multiply
    17,138.18x = 25,655.42 × 15,842.18
  4. Step 4: Simplify right side
    17,138.18x = 406,437,781.62
  5. Step 5: Solve for x
    x = 406,437,781.62/17,138.18
  6. Step 6: Final answer
    x = 23,715.34

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1.5x scale

Why These Related Problems?

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