Home / 11,278.80-16,918.68-3,487.76

Finding the Fourth Proportional to 11,278.80, 16,918.68 and 3,487.76

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Solution

The fourth proportional to 11,278.80, 16,918.68 and 3,487.76 is: 5,231.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.80 : 16,918.68 = 3,487.76 : x
  2. Step 2: Convert to fraction form
    11,278.80/16,918.68 = 3,487.76/x
  3. Step 3: Cross multiply
    11,278.80x = 16,918.68 × 3,487.76
  4. Step 4: Simplify right side
    11,278.80x = 59,008,295.36
  5. Step 5: Solve for x
    x = 59,008,295.36/11,278.80
  6. Step 6: Final answer
    x = 5,231.79

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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.