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Finding the Fourth Proportional to 12,034.88, 16,609.92 and 8,688.96

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Solution

The fourth proportional to 12,034.88, 16,609.92 and 8,688.96 is: 11,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,034.88 : 16,609.92 = 8,688.96 : x
  2. Step 2: Convert to fraction form
    12,034.88/16,609.92 = 8,688.96/x
  3. Step 3: Cross multiply
    12,034.88x = 16,609.92 × 8,688.96
  4. Step 4: Simplify right side
    12,034.88x = 144,322,930.48
  5. Step 5: Solve for x
    x = 144,322,930.48/12,034.88
  6. Step 6: Final answer
    x = 11,992.05

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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.