Home / 11,255.72-16,884.48-8,487.68

Finding the Fourth Proportional to 11,255.72, 16,884.48 and 8,487.68

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Solution

The fourth proportional to 11,255.72, 16,884.48 and 8,487.68 is: 12,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,255.72 : 16,884.48 = 8,487.68 : x
  2. Step 2: Convert to fraction form
    11,255.72/16,884.48 = 8,487.68/x
  3. Step 3: Cross multiply
    11,255.72x = 16,884.48 × 8,487.68
  4. Step 4: Simplify right side
    11,255.72x = 143,310,063.21
  5. Step 5: Solve for x
    x = 143,310,063.21/11,255.72
  6. Step 6: Final answer
    x = 12,732.20

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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.