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Finding the Fourth Proportional to 10,908.36, 15,048 and 8,251.20

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Solution

The fourth proportional to 10,908.36, 15,048 and 8,251.20 is: 11,382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.36 : 15,048 = 8,251.20 : x
  2. Step 2: Convert to fraction form
    10,908.36/15,048 = 8,251.20/x
  3. Step 3: Cross multiply
    10,908.36x = 15,048 × 8,251.20
  4. Step 4: Simplify right side
    10,908.36x = 124,164,057.60
  5. Step 5: Solve for x
    x = 124,164,057.60/10,908.36
  6. Step 6: Final answer
    x = 11,382.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.