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Finding the Fourth Proportional to 12,616.75, 18,933.77 and 4,408.75

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Solution

The fourth proportional to 12,616.75, 18,933.77 and 4,408.75 is: 6,616.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,616.75 : 18,933.77 = 4,408.75 : x
  2. Step 2: Convert to fraction form
    12,616.75/18,933.77 = 4,408.75/x
  3. Step 3: Cross multiply
    12,616.75x = 18,933.77 × 4,408.75
  4. Step 4: Simplify right side
    12,616.75x = 83,474,258.49
  5. Step 5: Solve for x
    x = 83,474,258.49/12,616.75
  6. Step 6: Final answer
    x = 6,616.15

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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.