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Finding the Fourth Proportional to 18,294.97, 25,247.07 and 9,911.47

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Solution

The fourth proportional to 18,294.97, 25,247.07 and 9,911.47 is: 13,677.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.97 : 25,247.07 = 9,911.47 : x
  2. Step 2: Convert to fraction form
    18,294.97/25,247.07 = 9,911.47/x
  3. Step 3: Cross multiply
    18,294.97x = 25,247.07 × 9,911.47
  4. Step 4: Simplify right side
    18,294.97x = 250,235,527.34
  5. Step 5: Solve for x
    x = 250,235,527.34/18,294.97
  6. Step 6: Final answer
    x = 13,677.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.