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Finding the Fourth Proportional to 18,251.82, 27,380.68 and 7,152.49

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Solution

The fourth proportional to 18,251.82, 27,380.68 and 7,152.49 is: 10,729.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,251.82 : 27,380.68 = 7,152.49 : x
  2. Step 2: Convert to fraction form
    18,251.82/27,380.68 = 7,152.49/x
  3. Step 3: Cross multiply
    18,251.82x = 27,380.68 × 7,152.49
  4. Step 4: Simplify right side
    18,251.82x = 195,839,902.99
  5. Step 5: Solve for x
    x = 195,839,902.99/18,251.82
  6. Step 6: Final answer
    x = 10,729.89

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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.