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Finding the Fourth Proportional to 18,647.46, 27,972.27 and 6,960.78

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Solution

The fourth proportional to 18,647.46, 27,972.27 and 6,960.78 is: 10,441.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.46 : 27,972.27 = 6,960.78 : x
  2. Step 2: Convert to fraction form
    18,647.46/27,972.27 = 6,960.78/x
  3. Step 3: Cross multiply
    18,647.46x = 27,972.27 × 6,960.78
  4. Step 4: Simplify right side
    18,647.46x = 194,708,817.57
  5. Step 5: Solve for x
    x = 194,708,817.57/18,647.46
  6. Step 6: Final answer
    x = 10,441.57

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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.