Home / 13,141.82-19,690.44-7,936.76

Finding the Fourth Proportional to 13,141.82, 19,690.44 and 7,936.76

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Solution

The fourth proportional to 13,141.82, 19,690.44 and 7,936.76 is: 11,891.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.82 : 19,690.44 = 7,936.76 : x
  2. Step 2: Convert to fraction form
    13,141.82/19,690.44 = 7,936.76/x
  3. Step 3: Cross multiply
    13,141.82x = 19,690.44 × 7,936.76
  4. Step 4: Simplify right side
    13,141.82x = 156,278,296.57
  5. Step 5: Solve for x
    x = 156,278,296.57/13,141.82
  6. Step 6: Final answer
    x = 11,891.68

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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.