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Finding the Fourth Proportional to 18,992.43, 28,496.99 and 10,105.67

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Solution

The fourth proportional to 18,992.43, 28,496.99 and 10,105.67 is: 15,162.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992.43 : 28,496.99 = 10,105.67 : x
  2. Step 2: Convert to fraction form
    18,992.43/28,496.99 = 10,105.67/x
  3. Step 3: Cross multiply
    18,992.43x = 28,496.99 × 10,105.67
  4. Step 4: Simplify right side
    18,992.43x = 287,980,983.92
  5. Step 5: Solve for x
    x = 287,980,983.92/18,992.43
  6. Step 6: Final answer
    x = 15,162.94

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