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Finding the Fourth Proportional to 13,755.48, 20,633.28 and 4,986.82

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Solution

The fourth proportional to 13,755.48, 20,633.28 and 4,986.82 is: 7,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.48 : 20,633.28 = 4,986.82 : x
  2. Step 2: Convert to fraction form
    13,755.48/20,633.28 = 4,986.82/x
  3. Step 3: Cross multiply
    13,755.48x = 20,633.28 × 4,986.82
  4. Step 4: Simplify right side
    13,755.48x = 102,894,453.37
  5. Step 5: Solve for x
    x = 102,894,453.37/13,755.48
  6. Step 6: Final answer
    x = 7,480.25

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