Home / 12,731.85-17,577.27-8,481.78

Finding the Fourth Proportional to 12,731.85, 17,577.27 and 8,481.78

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Solution

The fourth proportional to 12,731.85, 17,577.27 and 8,481.78 is: 11,709.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.85 : 17,577.27 = 8,481.78 : x
  2. Step 2: Convert to fraction form
    12,731.85/17,577.27 = 8,481.78/x
  3. Step 3: Cross multiply
    12,731.85x = 17,577.27 × 8,481.78
  4. Step 4: Simplify right side
    12,731.85x = 149,086,537.14
  5. Step 5: Solve for x
    x = 149,086,537.14/12,731.85
  6. Step 6: Final answer
    x = 11,709.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.