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Finding the Fourth Proportional to 13,782.35, 20,670.41 and 3,921.41

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Solution

The fourth proportional to 13,782.35, 20,670.41 and 3,921.41 is: 5,881.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.35 : 20,670.41 = 3,921.41 : x
  2. Step 2: Convert to fraction form
    13,782.35/20,670.41 = 3,921.41/x
  3. Step 3: Cross multiply
    13,782.35x = 20,670.41 × 3,921.41
  4. Step 4: Simplify right side
    13,782.35x = 81,057,029.52
  5. Step 5: Solve for x
    x = 81,057,029.52/13,782.35
  6. Step 6: Final answer
    x = 5,881.22

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