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Finding the Fourth Proportional to 11,821.22, 17,740.02 and 7,650.85

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Solution

The fourth proportional to 11,821.22, 17,740.02 and 7,650.85 is: 11,481.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.22 : 17,740.02 = 7,650.85 : x
  2. Step 2: Convert to fraction form
    11,821.22/17,740.02 = 7,650.85/x
  3. Step 3: Cross multiply
    11,821.22x = 17,740.02 × 7,650.85
  4. Step 4: Simplify right side
    11,821.22x = 135,726,232.02
  5. Step 5: Solve for x
    x = 135,726,232.02/11,821.22
  6. Step 6: Final answer
    x = 11,481.58

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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.