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Finding the Fourth Proportional to 11,160.78, 16,751.97 and 8,208.30

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Solution

The fourth proportional to 11,160.78, 16,751.97 and 8,208.30 is: 12,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.78 : 16,751.97 = 8,208.30 : x
  2. Step 2: Convert to fraction form
    11,160.78/16,751.97 = 8,208.30/x
  3. Step 3: Cross multiply
    11,160.78x = 16,751.97 × 8,208.30
  4. Step 4: Simplify right side
    11,160.78x = 137,505,195.35
  5. Step 5: Solve for x
    x = 137,505,195.35/11,160.78
  6. Step 6: Final answer
    x = 12,320.39

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1.5x scale

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.