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Finding the Fourth Proportional to 13,375.31, 20,062.15 and 4,141.31

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Solution

The fourth proportional to 13,375.31, 20,062.15 and 4,141.31 is: 6,211.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.31 : 20,062.15 = 4,141.31 : x
  2. Step 2: Convert to fraction form
    13,375.31/20,062.15 = 4,141.31/x
  3. Step 3: Cross multiply
    13,375.31x = 20,062.15 × 4,141.31
  4. Step 4: Simplify right side
    13,375.31x = 83,083,471.75
  5. Step 5: Solve for x
    x = 83,083,471.75/13,375.31
  6. Step 6: Final answer
    x = 6,211.71

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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.