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Finding the Fourth Proportional to 12,836.28, 19,251.72 and 4,936.28

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Solution

The fourth proportional to 12,836.28, 19,251.72 and 4,936.28 is: 7,403.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.28 : 19,251.72 = 4,936.28 : x
  2. Step 2: Convert to fraction form
    12,836.28/19,251.72 = 4,936.28/x
  3. Step 3: Cross multiply
    12,836.28x = 19,251.72 × 4,936.28
  4. Step 4: Simplify right side
    12,836.28x = 95,031,880.40
  5. Step 5: Solve for x
    x = 95,031,880.40/12,836.28
  6. Step 6: Final answer
    x = 7,403.38

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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.