Home / 22,787.40-34,149.10-18,115.40

Finding the Fourth Proportional to 22,787.40, 34,149.10 and 18,115.40

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Solution

The fourth proportional to 22,787.40, 34,149.10 and 18,115.40 is: 27,147.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,787.40 : 34,149.10 = 18,115.40 : x
  2. Step 2: Convert to fraction form
    22,787.40/34,149.10 = 18,115.40/x
  3. Step 3: Cross multiply
    22,787.40x = 34,149.10 × 18,115.40
  4. Step 4: Simplify right side
    22,787.40x = 618,624,606.14
  5. Step 5: Solve for x
    x = 618,624,606.14/22,787.40
  6. Step 6: Final answer
    x = 27,147.66

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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.