Home / 31,785.21-43,863.62-17,638.04

Finding the Fourth Proportional to 31,785.21, 43,863.62 and 17,638.04

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Solution

The fourth proportional to 31,785.21, 43,863.62 and 17,638.04 is: 24,340.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,785.21 : 43,863.62 = 17,638.04 : x
  2. Step 2: Convert to fraction form
    31,785.21/43,863.62 = 17,638.04/x
  3. Step 3: Cross multiply
    31,785.21x = 43,863.62 × 17,638.04
  4. Step 4: Simplify right side
    31,785.21x = 773,668,305.57
  5. Step 5: Solve for x
    x = 773,668,305.57/31,785.21
  6. Step 6: Final answer
    x = 24,340.51

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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.