Home / 20,752.98-31,129.68-5,961.86

Finding the Fourth Proportional to 20,752.98, 31,129.68 and 5,961.86

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Solution

The fourth proportional to 20,752.98, 31,129.68 and 5,961.86 is: 8,942.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.98 : 31,129.68 = 5,961.86 : x
  2. Step 2: Convert to fraction form
    20,752.98/31,129.68 = 5,961.86/x
  3. Step 3: Cross multiply
    20,752.98x = 31,129.68 × 5,961.86
  4. Step 4: Simplify right side
    20,752.98x = 185,590,794.00
  5. Step 5: Solve for x
    x = 185,590,794.00/20,752.98
  6. Step 6: Final answer
    x = 8,942.85

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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.