Home / 38,414.78-57,622.18-12,121.58

Finding the Fourth Proportional to 38,414.78, 57,622.18 and 12,121.58

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Solution

The fourth proportional to 38,414.78, 57,622.18 and 12,121.58 is: 18,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,414.78 : 57,622.18 = 12,121.58 : x
  2. Step 2: Convert to fraction form
    38,414.78/57,622.18 = 12,121.58/x
  3. Step 3: Cross multiply
    38,414.78x = 57,622.18 × 12,121.58
  4. Step 4: Simplify right side
    38,414.78x = 698,471,864.64
  5. Step 5: Solve for x
    x = 698,471,864.64/38,414.78
  6. Step 6: Final answer
    x = 18,182.37

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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.