Home / 20,879.59-31,319.36-5,084.61

Finding the Fourth Proportional to 20,879.59, 31,319.36 and 5,084.61

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Solution

The fourth proportional to 20,879.59, 31,319.36 and 5,084.61 is: 7,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879.59 : 31,319.36 = 5,084.61 : x
  2. Step 2: Convert to fraction form
    20,879.59/31,319.36 = 5,084.61/x
  3. Step 3: Cross multiply
    20,879.59x = 31,319.36 × 5,084.61
  4. Step 4: Simplify right side
    20,879.59x = 159,246,731.05
  5. Step 5: Solve for x
    x = 159,246,731.05/20,879.59
  6. Step 6: Final answer
    x = 7,626.91

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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.