Home / 13,647.42-20,468.85-3,787.69

Finding the Fourth Proportional to 13,647.42, 20,468.85 and 3,787.69

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Solution

The fourth proportional to 13,647.42, 20,468.85 and 3,787.69 is: 5,680.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.42 : 20,468.85 = 3,787.69 : x
  2. Step 2: Convert to fraction form
    13,647.42/20,468.85 = 3,787.69/x
  3. Step 3: Cross multiply
    13,647.42x = 20,468.85 × 3,787.69
  4. Step 4: Simplify right side
    13,647.42x = 77,529,658.46
  5. Step 5: Solve for x
    x = 77,529,658.46/13,647.42
  6. Step 6: Final answer
    x = 5,680.90

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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.