Home / 13,909.34-20,863.83-3,379.44

Finding the Fourth Proportional to 13,909.34, 20,863.83 and 3,379.44

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Solution

The fourth proportional to 13,909.34, 20,863.83 and 3,379.44 is: 5,069.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.34 : 20,863.83 = 3,379.44 : x
  2. Step 2: Convert to fraction form
    13,909.34/20,863.83 = 3,379.44/x
  3. Step 3: Cross multiply
    13,909.34x = 20,863.83 × 3,379.44
  4. Step 4: Simplify right side
    13,909.34x = 70,508,061.66
  5. Step 5: Solve for x
    x = 70,508,061.66/13,909.34
  6. Step 6: Final answer
    x = 5,069.12

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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.