Home / 26,121.20-39,171.77-12,785.96

Finding the Fourth Proportional to 26,121.20, 39,171.77 and 12,785.96

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Solution

The fourth proportional to 26,121.20, 39,171.77 and 12,785.96 is: 19,174.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,121.20 : 39,171.77 = 12,785.96 : x
  2. Step 2: Convert to fraction form
    26,121.20/39,171.77 = 12,785.96/x
  3. Step 3: Cross multiply
    26,121.20x = 39,171.77 × 12,785.96
  4. Step 4: Simplify right side
    26,121.20x = 500,848,766.30
  5. Step 5: Solve for x
    x = 500,848,766.30/26,121.20
  6. Step 6: Final answer
    x = 19,174.04

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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.