Home / 39,634.75-54,694.74-21,729.30

Finding the Fourth Proportional to 39,634.75, 54,694.74 and 21,729.30

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Solution

The fourth proportional to 39,634.75, 54,694.74 and 21,729.30 is: 29,985.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,634.75 : 54,694.74 = 21,729.30 : x
  2. Step 2: Convert to fraction form
    39,634.75/54,694.74 = 21,729.30/x
  3. Step 3: Cross multiply
    39,634.75x = 54,694.74 × 21,729.30
  4. Step 4: Simplify right side
    39,634.75x = 1,188,478,413.88
  5. Step 5: Solve for x
    x = 1,188,478,413.88/39,634.75
  6. Step 6: Final answer
    x = 29,985.77

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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.