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Finding the Fourth Proportional to 13,108.83, 19,665.67 and 11,920.42

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Solution

The fourth proportional to 13,108.83, 19,665.67 and 11,920.42 is: 17,882.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.83 : 19,665.67 = 11,920.42 : x
  2. Step 2: Convert to fraction form
    13,108.83/19,665.67 = 11,920.42/x
  3. Step 3: Cross multiply
    13,108.83x = 19,665.67 × 11,920.42
  4. Step 4: Simplify right side
    13,108.83x = 234,423,045.98
  5. Step 5: Solve for x
    x = 234,423,045.98/13,108.83
  6. Step 6: Final answer
    x = 17,882.84

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