Home / 20,719.52-31,074.60-6,676.85

Finding the Fourth Proportional to 20,719.52, 31,074.60 and 6,676.85

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Solution

The fourth proportional to 20,719.52, 31,074.60 and 6,676.85 is: 10,013.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.52 : 31,074.60 = 6,676.85 : x
  2. Step 2: Convert to fraction form
    20,719.52/31,074.60 = 6,676.85/x
  3. Step 3: Cross multiply
    20,719.52x = 31,074.60 × 6,676.85
  4. Step 4: Simplify right side
    20,719.52x = 207,480,545.73
  5. Step 5: Solve for x
    x = 207,480,545.73/20,719.52
  6. Step 6: Final answer
    x = 10,013.77

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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.