Home / 31,717.11-43,758.39-18,961.44

Finding the Fourth Proportional to 31,717.11, 43,758.39 and 18,961.44

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Solution

The fourth proportional to 31,717.11, 43,758.39 and 18,961.44 is: 26,160.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,717.11 : 43,758.39 = 18,961.44 : x
  2. Step 2: Convert to fraction form
    31,717.11/43,758.39 = 18,961.44/x
  3. Step 3: Cross multiply
    31,717.11x = 43,758.39 × 18,961.44
  4. Step 4: Simplify right side
    31,717.11x = 829,722,086.48
  5. Step 5: Solve for x
    x = 829,722,086.48/31,717.11
  6. Step 6: Final answer
    x = 26,160.08

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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.