Home / 31,686.57-43,732.16-18,255.27

Finding the Fourth Proportional to 31,686.57, 43,732.16 and 18,255.27

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Solution

The fourth proportional to 31,686.57, 43,732.16 and 18,255.27 is: 25,194.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.57 : 43,732.16 = 18,255.27 : x
  2. Step 2: Convert to fraction form
    31,686.57/43,732.16 = 18,255.27/x
  3. Step 3: Cross multiply
    31,686.57x = 43,732.16 × 18,255.27
  4. Step 4: Simplify right side
    31,686.57x = 798,342,297.21
  5. Step 5: Solve for x
    x = 798,342,297.21/31,686.57
  6. Step 6: Final answer
    x = 25,194.97

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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.