Home / 31,439.25-43,387.38-17,291.79

Finding the Fourth Proportional to 31,439.25, 43,387.38 and 17,291.79

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Solution

The fourth proportional to 31,439.25, 43,387.38 and 17,291.79 is: 23,863.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439.25 : 43,387.38 = 17,291.79 : x
  2. Step 2: Convert to fraction form
    31,439.25/43,387.38 = 17,291.79/x
  3. Step 3: Cross multiply
    31,439.25x = 43,387.38 × 17,291.79
  4. Step 4: Simplify right side
    31,439.25x = 750,245,463.61
  5. Step 5: Solve for x
    x = 750,245,463.61/31,439.25
  6. Step 6: Final answer
    x = 23,863.34

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1.5x scale

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.