Home / 12,133.12-18,180.72-8,442.56

Finding the Fourth Proportional to 12,133.12, 18,180.72 and 8,442.56

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Solution

The fourth proportional to 12,133.12, 18,180.72 and 8,442.56 is: 12,650.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,133.12 : 18,180.72 = 8,442.56 : x
  2. Step 2: Convert to fraction form
    12,133.12/18,180.72 = 8,442.56/x
  3. Step 3: Cross multiply
    12,133.12x = 18,180.72 × 8,442.56
  4. Step 4: Simplify right side
    12,133.12x = 153,491,819.44
  5. Step 5: Solve for x
    x = 153,491,819.44/12,133.12
  6. Step 6: Final answer
    x = 12,650.65

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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.