Home / 31,685.26-43,721.82-18,260.86

Finding the Fourth Proportional to 31,685.26, 43,721.82 and 18,260.86

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Solution

The fourth proportional to 31,685.26, 43,721.82 and 18,260.86 is: 25,197.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.26 : 43,721.82 = 18,260.86 : x
  2. Step 2: Convert to fraction form
    31,685.26/43,721.82 = 18,260.86/x
  3. Step 3: Cross multiply
    31,685.26x = 43,721.82 × 18,260.86
  4. Step 4: Simplify right side
    31,685.26x = 798,398,033.97
  5. Step 5: Solve for x
    x = 798,398,033.97/31,685.26
  6. Step 6: Final answer
    x = 25,197.77

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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.