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Finding the Fourth Proportional to 11,293, 16,940.46 and 3,085

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Solution

The fourth proportional to 11,293, 16,940.46 and 3,085 is: 4,627.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,293 : 16,940.46 = 3,085 : x
  2. Step 2: Convert to fraction form
    11,293/16,940.46 = 3,085/x
  3. Step 3: Cross multiply
    11,293x = 16,940.46 × 3,085
  4. Step 4: Simplify right side
    11,293x = 52,261,319.10
  5. Step 5: Solve for x
    x = 52,261,319.10/11,293
  6. Step 6: Final answer
    x = 4,627.76

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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.