Home / 13,648.86-20,472.12-3,787.38

Finding the Fourth Proportional to 13,648.86, 20,472.12 and 3,787.38

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Solution

The fourth proportional to 13,648.86, 20,472.12 and 3,787.38 is: 5,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,648.86 : 20,472.12 = 3,787.38 : x
  2. Step 2: Convert to fraction form
    13,648.86/20,472.12 = 3,787.38/x
  3. Step 3: Cross multiply
    13,648.86x = 20,472.12 × 3,787.38
  4. Step 4: Simplify right side
    13,648.86x = 77,535,697.85
  5. Step 5: Solve for x
    x = 77,535,697.85/13,648.86
  6. Step 6: Final answer
    x = 5,680.75

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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.