Home / 31,286.12-43,174.62-17,138.66

Finding the Fourth Proportional to 31,286.12, 43,174.62 and 17,138.66

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Solution

The fourth proportional to 31,286.12, 43,174.62 and 17,138.66 is: 23,651.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286.12 : 43,174.62 = 17,138.66 : x
  2. Step 2: Convert to fraction form
    31,286.12/43,174.62 = 17,138.66/x
  3. Step 3: Cross multiply
    31,286.12x = 43,174.62 × 17,138.66
  4. Step 4: Simplify right side
    31,286.12x = 739,954,916.94
  5. Step 5: Solve for x
    x = 739,954,916.94/31,286.12
  6. Step 6: Final answer
    x = 23,651.22

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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.