Home / 39,791.76-54,909.84-21,887.52

Finding the Fourth Proportional to 39,791.76, 54,909.84 and 21,887.52

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Solution

The fourth proportional to 39,791.76, 54,909.84 and 21,887.52 is: 30,203.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.76 : 54,909.84 = 21,887.52 : x
  2. Step 2: Convert to fraction form
    39,791.76/54,909.84 = 21,887.52/x
  3. Step 3: Cross multiply
    39,791.76x = 54,909.84 × 21,887.52
  4. Step 4: Simplify right side
    39,791.76x = 1,201,840,221.20
  5. Step 5: Solve for x
    x = 1,201,840,221.20/39,791.76
  6. Step 6: Final answer
    x = 30,203.24

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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.