Home / 13,579.62-20,372.25-4,219.38

Finding the Fourth Proportional to 13,579.62, 20,372.25 and 4,219.38

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Solution

The fourth proportional to 13,579.62, 20,372.25 and 4,219.38 is: 6,329.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.62 : 20,372.25 = 4,219.38 : x
  2. Step 2: Convert to fraction form
    13,579.62/20,372.25 = 4,219.38/x
  3. Step 3: Cross multiply
    13,579.62x = 20,372.25 × 4,219.38
  4. Step 4: Simplify right side
    13,579.62x = 85,958,264.21
  5. Step 5: Solve for x
    x = 85,958,264.21/13,579.62
  6. Step 6: Final answer
    x = 6,329.95

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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.