Home / 11,129.70-16,697.79-5,278.26

Finding the Fourth Proportional to 11,129.70, 16,697.79 and 5,278.26

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Solution

The fourth proportional to 11,129.70, 16,697.79 and 5,278.26 is: 7,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.70 : 16,697.79 = 5,278.26 : x
  2. Step 2: Convert to fraction form
    11,129.70/16,697.79 = 5,278.26/x
  3. Step 3: Cross multiply
    11,129.70x = 16,697.79 × 5,278.26
  4. Step 4: Simplify right side
    11,129.70x = 88,135,277.05
  5. Step 5: Solve for x
    x = 88,135,277.05/11,129.70
  6. Step 6: Final answer
    x = 7,918.93

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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.