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Finding the Fourth Proportional to 12,704.98, 19,059.27 and 3,940.63

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Solution

The fourth proportional to 12,704.98, 19,059.27 and 3,940.63 is: 5,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,704.98 : 19,059.27 = 3,940.63 : x
  2. Step 2: Convert to fraction form
    12,704.98/19,059.27 = 3,940.63/x
  3. Step 3: Cross multiply
    12,704.98x = 19,059.27 × 3,940.63
  4. Step 4: Simplify right side
    12,704.98x = 75,105,531.14
  5. Step 5: Solve for x
    x = 75,105,531.14/12,704.98
  6. Step 6: Final answer
    x = 5,911.50

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Double scale
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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.