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Finding the Fourth Proportional to 17,940.46, 26,910.42 and 8,072.78

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Solution

The fourth proportional to 17,940.46, 26,910.42 and 8,072.78 is: 12,109.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,940.46 : 26,910.42 = 8,072.78 : x
  2. Step 2: Convert to fraction form
    17,940.46/26,910.42 = 8,072.78/x
  3. Step 3: Cross multiply
    17,940.46x = 26,910.42 × 8,072.78
  4. Step 4: Simplify right side
    17,940.46x = 217,241,900.37
  5. Step 5: Solve for x
    x = 217,241,900.37/17,940.46
  6. Step 6: Final answer
    x = 12,109.05

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1.5x scale

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.