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Finding the Fourth Proportional to 20,155.50, 27,815.67 and 11,658.06

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Solution

The fourth proportional to 20,155.50, 27,815.67 and 11,658.06 is: 16,088.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.50 : 27,815.67 = 11,658.06 : x
  2. Step 2: Convert to fraction form
    20,155.50/27,815.67 = 11,658.06/x
  3. Step 3: Cross multiply
    20,155.50x = 27,815.67 × 11,658.06
  4. Step 4: Simplify right side
    20,155.50x = 324,276,749.80
  5. Step 5: Solve for x
    x = 324,276,749.80/20,155.50
  6. Step 6: Final answer
    x = 16,088.75

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