Home / 12,936.62-19,406.82-4,171.88

Finding the Fourth Proportional to 12,936.62, 19,406.82 and 4,171.88

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Solution

The fourth proportional to 12,936.62, 19,406.82 and 4,171.88 is: 6,258.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.62 : 19,406.82 = 4,171.88 : x
  2. Step 2: Convert to fraction form
    12,936.62/19,406.82 = 4,171.88/x
  3. Step 3: Cross multiply
    12,936.62x = 19,406.82 × 4,171.88
  4. Step 4: Simplify right side
    12,936.62x = 80,962,924.22
  5. Step 5: Solve for x
    x = 80,962,924.22/12,936.62
  6. Step 6: Final answer
    x = 6,258.43

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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.