Home / 20,777.29-31,183.55-8,306.12

Finding the Fourth Proportional to 20,777.29, 31,183.55 and 8,306.12

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Solution

The fourth proportional to 20,777.29, 31,183.55 and 8,306.12 is: 12,466.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.29 : 31,183.55 = 8,306.12 : x
  2. Step 2: Convert to fraction form
    20,777.29/31,183.55 = 8,306.12/x
  3. Step 3: Cross multiply
    20,777.29x = 31,183.55 × 8,306.12
  4. Step 4: Simplify right side
    20,777.29x = 259,014,308.33
  5. Step 5: Solve for x
    x = 259,014,308.33/20,777.29
  6. Step 6: Final answer
    x = 12,466.22

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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.