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Finding the Fourth Proportional to 18,304.82, 27,425.87 and 9,990.66

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Solution

The fourth proportional to 18,304.82, 27,425.87 and 9,990.66 is: 14,968.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,304.82 : 27,425.87 = 9,990.66 : x
  2. Step 2: Convert to fraction form
    18,304.82/27,425.87 = 9,990.66/x
  3. Step 3: Cross multiply
    18,304.82x = 27,425.87 × 9,990.66
  4. Step 4: Simplify right side
    18,304.82x = 274,002,542.37
  5. Step 5: Solve for x
    x = 274,002,542.37/18,304.82
  6. Step 6: Final answer
    x = 14,968.88

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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.