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Finding the Fourth Proportional to 11,818.73, 17,696.79 and 7,132.49

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Solution

The fourth proportional to 11,818.73, 17,696.79 and 7,132.49 is: 10,679.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.73 : 17,696.79 = 7,132.49 : x
  2. Step 2: Convert to fraction form
    11,818.73/17,696.79 = 7,132.49/x
  3. Step 3: Cross multiply
    11,818.73x = 17,696.79 × 7,132.49
  4. Step 4: Simplify right side
    11,818.73x = 126,222,177.71
  5. Step 5: Solve for x
    x = 126,222,177.71/11,818.73
  6. Step 6: Final answer
    x = 10,679.84

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1.5x scale

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.