Home / 20,766.21-31,149.32-5,183.83

Finding the Fourth Proportional to 20,766.21, 31,149.32 and 5,183.83

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Solution

The fourth proportional to 20,766.21, 31,149.32 and 5,183.83 is: 7,775.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.21 : 31,149.32 = 5,183.83 : x
  2. Step 2: Convert to fraction form
    20,766.21/31,149.32 = 5,183.83/x
  3. Step 3: Cross multiply
    20,766.21x = 31,149.32 × 5,183.83
  4. Step 4: Simplify right side
    20,766.21x = 161,472,779.50
  5. Step 5: Solve for x
    x = 161,472,779.50/20,766.21
  6. Step 6: Final answer
    x = 7,775.75

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1.5x scale

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.