Home / 12,786.66-19,178.46-3,427.43

Finding the Fourth Proportional to 12,786.66, 19,178.46 and 3,427.43

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Solution

The fourth proportional to 12,786.66, 19,178.46 and 3,427.43 is: 5,140.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.66 : 19,178.46 = 3,427.43 : x
  2. Step 2: Convert to fraction form
    12,786.66/19,178.46 = 3,427.43/x
  3. Step 3: Cross multiply
    12,786.66x = 19,178.46 × 3,427.43
  4. Step 4: Simplify right side
    12,786.66x = 65,732,733.27
  5. Step 5: Solve for x
    x = 65,732,733.27/12,786.66
  6. Step 6: Final answer
    x = 5,140.73

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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.