Home / 13,909.17-20,863.52-3,379.28

Finding the Fourth Proportional to 13,909.17, 20,863.52 and 3,379.28

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Solution

The fourth proportional to 13,909.17, 20,863.52 and 3,379.28 is: 5,068.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.17 : 20,863.52 = 3,379.28 : x
  2. Step 2: Convert to fraction form
    13,909.17/20,863.52 = 3,379.28/x
  3. Step 3: Cross multiply
    13,909.17x = 20,863.52 × 3,379.28
  4. Step 4: Simplify right side
    13,909.17x = 70,503,586.33
  5. Step 5: Solve for x
    x = 70,503,586.33/13,909.17
  6. Step 6: Final answer
    x = 5,068.86

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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.