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Finding the Fourth Proportional to 11,729.98, 16,190.79 and 6,696.98

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Solution

The fourth proportional to 11,729.98, 16,190.79 and 6,696.98 is: 9,243.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.98 : 16,190.79 = 6,696.98 : x
  2. Step 2: Convert to fraction form
    11,729.98/16,190.79 = 6,696.98/x
  3. Step 3: Cross multiply
    11,729.98x = 16,190.79 × 6,696.98
  4. Step 4: Simplify right side
    11,729.98x = 108,429,396.81
  5. Step 5: Solve for x
    x = 108,429,396.81/11,729.98
  6. Step 6: Final answer
    x = 9,243.78

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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.