Home / 31,286.44-43,175.31-17,139.31

Finding the Fourth Proportional to 31,286.44, 43,175.31 and 17,139.31

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Solution

The fourth proportional to 31,286.44, 43,175.31 and 17,139.31 is: 23,652.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286.44 : 43,175.31 = 17,139.31 : x
  2. Step 2: Convert to fraction form
    31,286.44/43,175.31 = 17,139.31/x
  3. Step 3: Cross multiply
    31,286.44x = 43,175.31 × 17,139.31
  4. Step 4: Simplify right side
    31,286.44x = 739,995,022.44
  5. Step 5: Solve for x
    x = 739,995,022.44/31,286.44
  6. Step 6: Final answer
    x = 23,652.26

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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.