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Finding the Fourth Proportional to 12,603.63, 18,908.31 and 3,839.23

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Solution

The fourth proportional to 12,603.63, 18,908.31 and 3,839.23 is: 5,759.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.63 : 18,908.31 = 3,839.23 : x
  2. Step 2: Convert to fraction form
    12,603.63/18,908.31 = 3,839.23/x
  3. Step 3: Cross multiply
    12,603.63x = 18,908.31 × 3,839.23
  4. Step 4: Simplify right side
    12,603.63x = 72,593,351.00
  5. Step 5: Solve for x
    x = 72,593,351.00/12,603.63
  6. Step 6: Final answer
    x = 5,759.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.