Home / 13,715.12-20,572.68-4,949.90

Finding the Fourth Proportional to 13,715.12, 20,572.68 and 4,949.90

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Solution

The fourth proportional to 13,715.12, 20,572.68 and 4,949.90 is: 7,424.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.12 : 20,572.68 = 4,949.90 : x
  2. Step 2: Convert to fraction form
    13,715.12/20,572.68 = 4,949.90/x
  3. Step 3: Cross multiply
    13,715.12x = 20,572.68 × 4,949.90
  4. Step 4: Simplify right side
    13,715.12x = 101,832,708.73
  5. Step 5: Solve for x
    x = 101,832,708.73/13,715.12
  6. Step 6: Final answer
    x = 7,424.85

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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.