Home / 11,319.25-16,979.33-5,393.09

Finding the Fourth Proportional to 11,319.25, 16,979.33 and 5,393.09

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Solution

The fourth proportional to 11,319.25, 16,979.33 and 5,393.09 is: 8,089.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.25 : 16,979.33 = 5,393.09 : x
  2. Step 2: Convert to fraction form
    11,319.25/16,979.33 = 5,393.09/x
  3. Step 3: Cross multiply
    11,319.25x = 16,979.33 × 5,393.09
  4. Step 4: Simplify right side
    11,319.25x = 91,571,054.83
  5. Step 5: Solve for x
    x = 91,571,054.83/11,319.25
  6. Step 6: Final answer
    x = 8,089.85

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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.