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Finding the Fourth Proportional to 20,949.97, 31,416.76 and 7,795.17

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Solution

The fourth proportional to 20,949.97, 31,416.76 and 7,795.17 is: 11,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.97 : 31,416.76 = 7,795.17 : x
  2. Step 2: Convert to fraction form
    20,949.97/31,416.76 = 7,795.17/x
  3. Step 3: Cross multiply
    20,949.97x = 31,416.76 × 7,795.17
  4. Step 4: Simplify right side
    20,949.97x = 244,898,985.05
  5. Step 5: Solve for x
    x = 244,898,985.05/20,949.97
  6. Step 6: Final answer
    x = 11,689.71

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