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Finding the Fourth Proportional to 11,151.46, 16,728 and 3,360.88

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Solution

The fourth proportional to 11,151.46, 16,728 and 3,360.88 is: 5,041.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.46 : 16,728 = 3,360.88 : x
  2. Step 2: Convert to fraction form
    11,151.46/16,728 = 3,360.88/x
  3. Step 3: Cross multiply
    11,151.46x = 16,728 × 3,360.88
  4. Step 4: Simplify right side
    11,151.46x = 56,220,800.64
  5. Step 5: Solve for x
    x = 56,220,800.64/11,151.46
  6. Step 6: Final answer
    x = 5,041.56

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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.