Home / 39,659.98-54,731.50-21,755.90

Finding the Fourth Proportional to 39,659.98, 54,731.50 and 21,755.90

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Solution

The fourth proportional to 39,659.98, 54,731.50 and 21,755.90 is: 30,023.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,659.98 : 54,731.50 = 21,755.90 : x
  2. Step 2: Convert to fraction form
    39,659.98/54,731.50 = 21,755.90/x
  3. Step 3: Cross multiply
    39,659.98x = 54,731.50 × 21,755.90
  4. Step 4: Simplify right side
    39,659.98x = 1,190,733,040.85
  5. Step 5: Solve for x
    x = 1,190,733,040.85/39,659.98
  6. Step 6: Final answer
    x = 30,023.54

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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.