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Finding the Fourth Proportional to 11,696.82, 16,143.44 and 7,449.71

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Solution

The fourth proportional to 11,696.82, 16,143.44 and 7,449.71 is: 10,281.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,696.82 : 16,143.44 = 7,449.71 : x
  2. Step 2: Convert to fraction form
    11,696.82/16,143.44 = 7,449.71/x
  3. Step 3: Cross multiply
    11,696.82x = 16,143.44 × 7,449.71
  4. Step 4: Simplify right side
    11,696.82x = 120,263,909.15
  5. Step 5: Solve for x
    x = 120,263,909.15/11,696.82
  6. Step 6: Final answer
    x = 10,281.76

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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.