Home / 39,634.83-54,694.63-21,729.47

Finding the Fourth Proportional to 39,634.83, 54,694.63 and 21,729.47

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Solution

The fourth proportional to 39,634.83, 54,694.63 and 21,729.47 is: 29,985.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,634.83 : 54,694.63 = 21,729.47 : x
  2. Step 2: Convert to fraction form
    39,634.83/54,694.63 = 21,729.47/x
  3. Step 3: Cross multiply
    39,634.83x = 54,694.63 × 21,729.47
  4. Step 4: Simplify right side
    39,634.83x = 1,188,485,321.75
  5. Step 5: Solve for x
    x = 1,188,485,321.75/39,634.83
  6. Step 6: Final answer
    x = 29,985.88

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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.