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Finding the Fourth Proportional to 11,676.78, 17,481.60 and 10,856.70

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Solution

The fourth proportional to 11,676.78, 17,481.60 and 10,856.70 is: 16,253.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,676.78 : 17,481.60 = 10,856.70 : x
  2. Step 2: Convert to fraction form
    11,676.78/17,481.60 = 10,856.70/x
  3. Step 3: Cross multiply
    11,676.78x = 17,481.60 × 10,856.70
  4. Step 4: Simplify right side
    11,676.78x = 189,792,486.72
  5. Step 5: Solve for x
    x = 189,792,486.72/11,676.78
  6. Step 6: Final answer
    x = 16,253.84

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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.