Home / 12,786.28-19,165.66-6,197.92

Finding the Fourth Proportional to 12,786.28, 19,165.66 and 6,197.92

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Solution

The fourth proportional to 12,786.28, 19,165.66 and 6,197.92 is: 9,290.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.28 : 19,165.66 = 6,197.92 : x
  2. Step 2: Convert to fraction form
    12,786.28/19,165.66 = 6,197.92/x
  3. Step 3: Cross multiply
    12,786.28x = 19,165.66 × 6,197.92
  4. Step 4: Simplify right side
    12,786.28x = 118,787,227.43
  5. Step 5: Solve for x
    x = 118,787,227.43/12,786.28
  6. Step 6: Final answer
    x = 9,290.21

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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.