Home / 13,876.11-20,814.18-3,487.86

Finding the Fourth Proportional to 13,876.11, 20,814.18 and 3,487.86

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Solution

The fourth proportional to 13,876.11, 20,814.18 and 3,487.86 is: 5,231.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,876.11 : 20,814.18 = 3,487.86 : x
  2. Step 2: Convert to fraction form
    13,876.11/20,814.18 = 3,487.86/x
  3. Step 3: Cross multiply
    13,876.11x = 20,814.18 × 3,487.86
  4. Step 4: Simplify right side
    13,876.11x = 72,596,945.85
  5. Step 5: Solve for x
    x = 72,596,945.85/13,876.11
  6. Step 6: Final answer
    x = 5,231.79

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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.