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Finding the Fourth Proportional to 12,081.68, 16,672.74 and 6,776.48

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Solution

The fourth proportional to 12,081.68, 16,672.74 and 6,776.48 is: 9,351.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.68 : 16,672.74 = 6,776.48 : x
  2. Step 2: Convert to fraction form
    12,081.68/16,672.74 = 6,776.48/x
  3. Step 3: Cross multiply
    12,081.68x = 16,672.74 × 6,776.48
  4. Step 4: Simplify right side
    12,081.68x = 112,982,489.16
  5. Step 5: Solve for x
    x = 112,982,489.16/12,081.68
  6. Step 6: Final answer
    x = 9,351.55

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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.