Home / 39,628.82-54,687.48-21,724.58

Finding the Fourth Proportional to 39,628.82, 54,687.48 and 21,724.58

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Solution

The fourth proportional to 39,628.82, 54,687.48 and 21,724.58 is: 29,979.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,628.82 : 54,687.48 = 21,724.58 : x
  2. Step 2: Convert to fraction form
    39,628.82/54,687.48 = 21,724.58/x
  3. Step 3: Cross multiply
    39,628.82x = 54,687.48 × 21,724.58
  4. Step 4: Simplify right side
    39,628.82x = 1,188,062,534.26
  5. Step 5: Solve for x
    x = 1,188,062,534.26/39,628.82
  6. Step 6: Final answer
    x = 29,979.76

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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.