Home / 39,634.82-54,696.05-21,729.95

Finding the Fourth Proportional to 39,634.82, 54,696.05 and 21,729.95

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Solution

The fourth proportional to 39,634.82, 54,696.05 and 21,729.95 is: 29,987.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,634.82 : 54,696.05 = 21,729.95 : x
  2. Step 2: Convert to fraction form
    39,634.82/54,696.05 = 21,729.95/x
  3. Step 3: Cross multiply
    39,634.82x = 54,696.05 × 21,729.95
  4. Step 4: Simplify right side
    39,634.82x = 1,188,542,049.57
  5. Step 5: Solve for x
    x = 1,188,542,049.57/39,634.82
  6. Step 6: Final answer
    x = 29,987.32

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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.