Home / 38,414.80-57,622.20-12,121.56

Finding the Fourth Proportional to 38,414.80, 57,622.20 and 12,121.56

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Solution

The fourth proportional to 38,414.80, 57,622.20 and 12,121.56 is: 18,182.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,414.80 : 57,622.20 = 12,121.56 : x
  2. Step 2: Convert to fraction form
    38,414.80/57,622.20 = 12,121.56/x
  3. Step 3: Cross multiply
    38,414.80x = 57,622.20 × 12,121.56
  4. Step 4: Simplify right side
    38,414.80x = 698,470,954.63
  5. Step 5: Solve for x
    x = 698,470,954.63/38,414.80
  6. Step 6: Final answer
    x = 18,182.34

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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.