Home / 39,625.82-54,682.76-21,720.44

Finding the Fourth Proportional to 39,625.82, 54,682.76 and 21,720.44

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Solution

The fourth proportional to 39,625.82, 54,682.76 and 21,720.44 is: 29,973.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,625.82 : 54,682.76 = 21,720.44 : x
  2. Step 2: Convert to fraction form
    39,625.82/54,682.76 = 21,720.44/x
  3. Step 3: Cross multiply
    39,625.82x = 54,682.76 × 21,720.44
  4. Step 4: Simplify right side
    39,625.82x = 1,187,733,607.61
  5. Step 5: Solve for x
    x = 1,187,733,607.61/39,625.82
  6. Step 6: Final answer
    x = 29,973.73

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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.