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Finding the Fourth Proportional to 39,289, 54,218.82 and 21,625

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Solution

The fourth proportional to 39,289, 54,218.82 and 21,625 is: 29,842.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,289 : 54,218.82 = 21,625 : x
  2. Step 2: Convert to fraction form
    39,289/54,218.82 = 21,625/x
  3. Step 3: Cross multiply
    39,289x = 54,218.82 × 21,625
  4. Step 4: Simplify right side
    39,289x = 1,172,481,982.50
  5. Step 5: Solve for x
    x = 1,172,481,982.50/39,289
  6. Step 6: Final answer
    x = 29,842.50

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