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Finding the Fourth Proportional to 12,680.56, 19,020.88 and 3,446.56

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Solution

The fourth proportional to 12,680.56, 19,020.88 and 3,446.56 is: 5,169.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.56 : 19,020.88 = 3,446.56 : x
  2. Step 2: Convert to fraction form
    12,680.56/19,020.88 = 3,446.56/x
  3. Step 3: Cross multiply
    12,680.56x = 19,020.88 × 3,446.56
  4. Step 4: Simplify right side
    12,680.56x = 65,556,604.17
  5. Step 5: Solve for x
    x = 65,556,604.17/12,680.56
  6. Step 6: Final answer
    x = 5,169.85

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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.