Home / 20,640.89-30,961.34-5,058.38

Finding the Fourth Proportional to 20,640.89, 30,961.34 and 5,058.38

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Solution

The fourth proportional to 20,640.89, 30,961.34 and 5,058.38 is: 7,587.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.89 : 30,961.34 = 5,058.38 : x
  2. Step 2: Convert to fraction form
    20,640.89/30,961.34 = 5,058.38/x
  3. Step 3: Cross multiply
    20,640.89x = 30,961.34 × 5,058.38
  4. Step 4: Simplify right side
    20,640.89x = 156,614,042.93
  5. Step 5: Solve for x
    x = 156,614,042.93/20,640.89
  6. Step 6: Final answer
    x = 7,587.56

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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.