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Finding the Fourth Proportional to 11,676.76, 17,521.21 and 3,781.69

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Solution

The fourth proportional to 11,676.76, 17,521.21 and 3,781.69 is: 5,674.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,676.76 : 17,521.21 = 3,781.69 : x
  2. Step 2: Convert to fraction form
    11,676.76/17,521.21 = 3,781.69/x
  3. Step 3: Cross multiply
    11,676.76x = 17,521.21 × 3,781.69
  4. Step 4: Simplify right side
    11,676.76x = 66,259,745.57
  5. Step 5: Solve for x
    x = 66,259,745.57/11,676.76
  6. Step 6: Final answer
    x = 5,674.50

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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.