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Finding the Fourth Proportional to 39,603.88, 59,400.85 and 12,947.64

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Solution

The fourth proportional to 39,603.88, 59,400.85 and 12,947.64 is: 19,419.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,603.88 : 59,400.85 = 12,947.64 : x
  2. Step 2: Convert to fraction form
    39,603.88/59,400.85 = 12,947.64/x
  3. Step 3: Cross multiply
    39,603.88x = 59,400.85 × 12,947.64
  4. Step 4: Simplify right side
    39,603.88x = 769,100,821.49
  5. Step 5: Solve for x
    x = 769,100,821.49/39,603.88
  6. Step 6: Final answer
    x = 19,419.84

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