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Finding the Fourth Proportional to 20,757.76, 28,645.44 and 11,326.16

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Solution

The fourth proportional to 20,757.76, 28,645.44 and 11,326.16 is: 15,629.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.76 : 28,645.44 = 11,326.16 : x
  2. Step 2: Convert to fraction form
    20,757.76/28,645.44 = 11,326.16/x
  3. Step 3: Cross multiply
    20,757.76x = 28,645.44 × 11,326.16
  4. Step 4: Simplify right side
    20,757.76x = 324,442,836.71
  5. Step 5: Solve for x
    x = 324,442,836.71/20,757.76
  6. Step 6: Final answer
    x = 15,629.95

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