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Finding the Fourth Proportional to 11,179, 16,768.50 and 3,388.42

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Solution

The fourth proportional to 11,179, 16,768.50 and 3,388.42 is: 5,082.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179 : 16,768.50 = 3,388.42 : x
  2. Step 2: Convert to fraction form
    11,179/16,768.50 = 3,388.42/x
  3. Step 3: Cross multiply
    11,179x = 16,768.50 × 3,388.42
  4. Step 4: Simplify right side
    11,179x = 56,818,720.77
  5. Step 5: Solve for x
    x = 56,818,720.77/11,179
  6. Step 6: Final answer
    x = 5,082.63

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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.