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Finding the Fourth Proportional to 9,981.97, 13,732.67 and 9,705.17

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Solution

The fourth proportional to 9,981.97, 13,732.67 and 9,705.17 is: 13,351.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,981.97 : 13,732.67 = 9,705.17 : x
  2. Step 2: Convert to fraction form
    9,981.97/13,732.67 = 9,705.17/x
  3. Step 3: Cross multiply
    9,981.97x = 13,732.67 × 9,705.17
  4. Step 4: Simplify right side
    9,981.97x = 133,277,882.71
  5. Step 5: Solve for x
    x = 133,277,882.71/9,981.97
  6. Step 6: Final answer
    x = 13,351.87

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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.