Home / 39,640.28-54,704.01-21,734.88

Finding the Fourth Proportional to 39,640.28, 54,704.01 and 21,734.88

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Solution

The fourth proportional to 39,640.28, 54,704.01 and 21,734.88 is: 29,994.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,640.28 : 54,704.01 = 21,734.88 : x
  2. Step 2: Convert to fraction form
    39,640.28/54,704.01 = 21,734.88/x
  3. Step 3: Cross multiply
    39,640.28x = 54,704.01 × 21,734.88
  4. Step 4: Simplify right side
    39,640.28x = 1,188,985,092.87
  5. Step 5: Solve for x
    x = 1,188,985,092.87/39,640.28
  6. Step 6: Final answer
    x = 29,994.37

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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.