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Finding the Fourth Proportional to 36,905.92, 50,930.31 and 20,138.92

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Solution

The fourth proportional to 36,905.92, 50,930.31 and 20,138.92 is: 27,791.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,905.92 : 50,930.31 = 20,138.92 : x
  2. Step 2: Convert to fraction form
    36,905.92/50,930.31 = 20,138.92/x
  3. Step 3: Cross multiply
    36,905.92x = 50,930.31 × 20,138.92
  4. Step 4: Simplify right side
    36,905.92x = 1,025,681,438.67
  5. Step 5: Solve for x
    x = 1,025,681,438.67/36,905.92
  6. Step 6: Final answer
    x = 27,791.79

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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.