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Finding the Fourth Proportional to 21,259.74, 31,894.20 and 6,469.82

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Solution

The fourth proportional to 21,259.74, 31,894.20 and 6,469.82 is: 9,706.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.74 : 31,894.20 = 6,469.82 : x
  2. Step 2: Convert to fraction form
    21,259.74/31,894.20 = 6,469.82/x
  3. Step 3: Cross multiply
    21,259.74x = 31,894.20 × 6,469.82
  4. Step 4: Simplify right side
    21,259.74x = 206,349,573.57
  5. Step 5: Solve for x
    x = 206,349,573.57/21,259.74
  6. Step 6: Final answer
    x = 9,706.12

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