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Finding the Fourth Proportional to 11,879.25, 16,393.76 and 7,099.03

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Solution

The fourth proportional to 11,879.25, 16,393.76 and 7,099.03 is: 9,796.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.25 : 16,393.76 = 7,099.03 : x
  2. Step 2: Convert to fraction form
    11,879.25/16,393.76 = 7,099.03/x
  3. Step 3: Cross multiply
    11,879.25x = 16,393.76 × 7,099.03
  4. Step 4: Simplify right side
    11,879.25x = 116,379,794.05
  5. Step 5: Solve for x
    x = 116,379,794.05/11,879.25
  6. Step 6: Final answer
    x = 9,796.90

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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.