Home / 12,176.31-16,778.20-9,343.56

Finding the Fourth Proportional to 12,176.31, 16,778.20 and 9,343.56

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Solution

The fourth proportional to 12,176.31, 16,778.20 and 9,343.56 is: 12,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,176.31 : 16,778.20 = 9,343.56 : x
  2. Step 2: Convert to fraction form
    12,176.31/16,778.20 = 9,343.56/x
  3. Step 3: Cross multiply
    12,176.31x = 16,778.20 × 9,343.56
  4. Step 4: Simplify right side
    12,176.31x = 156,768,118.39
  5. Step 5: Solve for x
    x = 156,768,118.39/12,176.31
  6. Step 6: Final answer
    x = 12,874.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.