Home / 31,516.95-43,474.10-18,761.61

Finding the Fourth Proportional to 31,516.95, 43,474.10 and 18,761.61

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Solution

The fourth proportional to 31,516.95, 43,474.10 and 18,761.61 is: 25,879.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,516.95 : 43,474.10 = 18,761.61 : x
  2. Step 2: Convert to fraction form
    31,516.95/43,474.10 = 18,761.61/x
  3. Step 3: Cross multiply
    31,516.95x = 43,474.10 × 18,761.61
  4. Step 4: Simplify right side
    31,516.95x = 815,644,015.49
  5. Step 5: Solve for x
    x = 815,644,015.49/31,516.95
  6. Step 6: Final answer
    x = 25,879.54

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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.