Home / 12,135.92-18,180.55-7,442.24

Finding the Fourth Proportional to 12,135.92, 18,180.55 and 7,442.24

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Solution

The fourth proportional to 12,135.92, 18,180.55 and 7,442.24 is: 11,149.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.92 : 18,180.55 = 7,442.24 : x
  2. Step 2: Convert to fraction form
    12,135.92/18,180.55 = 7,442.24/x
  3. Step 3: Cross multiply
    12,135.92x = 18,180.55 × 7,442.24
  4. Step 4: Simplify right side
    12,135.92x = 135,304,035.04
  5. Step 5: Solve for x
    x = 135,304,035.04/12,135.92
  6. Step 6: Final answer
    x = 11,149.06

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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.