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Finding the Fourth Proportional to 28,682.73, 39,560.27 and 20,751.21

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Solution

The fourth proportional to 28,682.73, 39,560.27 and 20,751.21 is: 28,620.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682.73 : 39,560.27 = 20,751.21 : x
  2. Step 2: Convert to fraction form
    28,682.73/39,560.27 = 20,751.21/x
  3. Step 3: Cross multiply
    28,682.73x = 39,560.27 × 20,751.21
  4. Step 4: Simplify right side
    28,682.73x = 820,923,366.67
  5. Step 5: Solve for x
    x = 820,923,366.67/28,682.73
  6. Step 6: Final answer
    x = 28,620.82

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