Home / 18,648.30-27,972.47-12,787.14

Finding the Fourth Proportional to 18,648.30, 27,972.47 and 12,787.14

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Solution

The fourth proportional to 18,648.30, 27,972.47 and 12,787.14 is: 19,180.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,648.30 : 27,972.47 = 12,787.14 : x
  2. Step 2: Convert to fraction form
    18,648.30/27,972.47 = 12,787.14/x
  3. Step 3: Cross multiply
    18,648.30x = 27,972.47 × 12,787.14
  4. Step 4: Simplify right side
    18,648.30x = 357,687,890.04
  5. Step 5: Solve for x
    x = 357,687,890.04/18,648.30
  6. Step 6: Final answer
    x = 19,180.72

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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.