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Finding the Fourth Proportional to 11,351.76, 17,016.12 and 7,190.48

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Solution

The fourth proportional to 11,351.76, 17,016.12 and 7,190.48 is: 10,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,351.76 : 17,016.12 = 7,190.48 : x
  2. Step 2: Convert to fraction form
    11,351.76/17,016.12 = 7,190.48/x
  3. Step 3: Cross multiply
    11,351.76x = 17,016.12 × 7,190.48
  4. Step 4: Simplify right side
    11,351.76x = 122,354,070.54
  5. Step 5: Solve for x
    x = 122,354,070.54/11,351.76
  6. Step 6: Final answer
    x = 10,778.42

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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.