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Finding the Fourth Proportional to 12,563.28, 18,845.04 and 3,329.28

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Solution

The fourth proportional to 12,563.28, 18,845.04 and 3,329.28 is: 4,993.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,563.28 : 18,845.04 = 3,329.28 : x
  2. Step 2: Convert to fraction form
    12,563.28/18,845.04 = 3,329.28/x
  3. Step 3: Cross multiply
    12,563.28x = 18,845.04 × 3,329.28
  4. Step 4: Simplify right side
    12,563.28x = 62,740,414.77
  5. Step 5: Solve for x
    x = 62,740,414.77/12,563.28
  6. Step 6: Final answer
    x = 4,993.95

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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.