Home / 31,687.31-43,725.49-18,937.96

Finding the Fourth Proportional to 31,687.31, 43,725.49 and 18,937.96

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Solution

The fourth proportional to 31,687.31, 43,725.49 and 18,937.96 is: 26,132.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.31 : 43,725.49 = 18,937.96 : x
  2. Step 2: Convert to fraction form
    31,687.31/43,725.49 = 18,937.96/x
  3. Step 3: Cross multiply
    31,687.31x = 43,725.49 × 18,937.96
  4. Step 4: Simplify right side
    31,687.31x = 828,071,580.60
  5. Step 5: Solve for x
    x = 828,071,580.60/31,687.31
  6. Step 6: Final answer
    x = 26,132.59

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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.