Home / 13,691.52-20,535.66-3,829.86

Finding the Fourth Proportional to 13,691.52, 20,535.66 and 3,829.86

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Solution

The fourth proportional to 13,691.52, 20,535.66 and 3,829.86 is: 5,744.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.52 : 20,535.66 = 3,829.86 : x
  2. Step 2: Convert to fraction form
    13,691.52/20,535.66 = 3,829.86/x
  3. Step 3: Cross multiply
    13,691.52x = 20,535.66 × 3,829.86
  4. Step 4: Simplify right side
    13,691.52x = 78,648,702.81
  5. Step 5: Solve for x
    x = 78,648,702.81/13,691.52
  6. Step 6: Final answer
    x = 5,744.34

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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.