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Finding the Fourth Proportional to 18,474.78, 27,711.33 and 6,787.14

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Solution

The fourth proportional to 18,474.78, 27,711.33 and 6,787.14 is: 10,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.78 : 27,711.33 = 6,787.14 : x
  2. Step 2: Convert to fraction form
    18,474.78/27,711.33 = 6,787.14/x
  3. Step 3: Cross multiply
    18,474.78x = 27,711.33 × 6,787.14
  4. Step 4: Simplify right side
    18,474.78x = 188,080,676.30
  5. Step 5: Solve for x
    x = 188,080,676.30/18,474.78
  6. Step 6: Final answer
    x = 10,180.40

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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.