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Finding the Fourth Proportional to 18,654.87, 27,983.40 and 5,326.84

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Solution

The fourth proportional to 18,654.87, 27,983.40 and 5,326.84 is: 7,990.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.87 : 27,983.40 = 5,326.84 : x
  2. Step 2: Convert to fraction form
    18,654.87/27,983.40 = 5,326.84/x
  3. Step 3: Cross multiply
    18,654.87x = 27,983.40 × 5,326.84
  4. Step 4: Simplify right side
    18,654.87x = 149,062,927.90
  5. Step 5: Solve for x
    x = 149,062,927.90/18,654.87
  6. Step 6: Final answer
    x = 7,990.56

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Similar ratio
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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.