Home / 11,215.05-16,821.97-3,423.25

Finding the Fourth Proportional to 11,215.05, 16,821.97 and 3,423.25

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Solution

The fourth proportional to 11,215.05, 16,821.97 and 3,423.25 is: 5,134.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.05 : 16,821.97 = 3,423.25 : x
  2. Step 2: Convert to fraction form
    11,215.05/16,821.97 = 3,423.25/x
  3. Step 3: Cross multiply
    11,215.05x = 16,821.97 × 3,423.25
  4. Step 4: Simplify right side
    11,215.05x = 57,585,791.69
  5. Step 5: Solve for x
    x = 57,585,791.69/11,215.05
  6. Step 6: Final answer
    x = 5,134.69

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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.