Home / 12,796.20-19,198.40-8,120.14

Finding the Fourth Proportional to 12,796.20, 19,198.40 and 8,120.14

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Solution

The fourth proportional to 12,796.20, 19,198.40 and 8,120.14 is: 12,182.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,796.20 : 19,198.40 = 8,120.14 : x
  2. Step 2: Convert to fraction form
    12,796.20/19,198.40 = 8,120.14/x
  3. Step 3: Cross multiply
    12,796.20x = 19,198.40 × 8,120.14
  4. Step 4: Simplify right side
    12,796.20x = 155,893,695.78
  5. Step 5: Solve for x
    x = 155,893,695.78/12,796.20
  6. Step 6: Final answer
    x = 12,182.81

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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.