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Finding the Fourth Proportional to 11,661.78, 17,481.05 and 9,325.79

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Solution

The fourth proportional to 11,661.78, 17,481.05 and 9,325.79 is: 13,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,661.78 : 17,481.05 = 9,325.79 : x
  2. Step 2: Convert to fraction form
    11,661.78/17,481.05 = 9,325.79/x
  3. Step 3: Cross multiply
    11,661.78x = 17,481.05 × 9,325.79
  4. Step 4: Simplify right side
    11,661.78x = 163,024,601.28
  5. Step 5: Solve for x
    x = 163,024,601.28/11,661.78
  6. Step 6: Final answer
    x = 13,979.39

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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.