Home / 31,782.90-43,857.97-18,348.02

Finding the Fourth Proportional to 31,782.90, 43,857.97 and 18,348.02

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Solution

The fourth proportional to 31,782.90, 43,857.97 and 18,348.02 is: 25,318.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,782.90 : 43,857.97 = 18,348.02 : x
  2. Step 2: Convert to fraction form
    31,782.90/43,857.97 = 18,348.02/x
  3. Step 3: Cross multiply
    31,782.90x = 43,857.97 × 18,348.02
  4. Step 4: Simplify right side
    31,782.90x = 804,706,910.72
  5. Step 5: Solve for x
    x = 804,706,910.72/31,782.90
  6. Step 6: Final answer
    x = 25,318.86

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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.