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Finding the Fourth Proportional to 12,704.97, 19,059.29 and 3,940.59

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Solution

The fourth proportional to 12,704.97, 19,059.29 and 3,940.59 is: 5,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,704.97 : 19,059.29 = 3,940.59 : x
  2. Step 2: Convert to fraction form
    12,704.97/19,059.29 = 3,940.59/x
  3. Step 3: Cross multiply
    12,704.97x = 19,059.29 × 3,940.59
  4. Step 4: Simplify right side
    12,704.97x = 75,104,847.58
  5. Step 5: Solve for x
    x = 75,104,847.58/12,704.97
  6. Step 6: Final answer
    x = 5,911.45

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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.