Home / 12,881.82-19,321.80-3,996.92

Finding the Fourth Proportional to 12,881.82, 19,321.80 and 3,996.92

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Solution

The fourth proportional to 12,881.82, 19,321.80 and 3,996.92 is: 5,995.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.82 : 19,321.80 = 3,996.92 : x
  2. Step 2: Convert to fraction form
    12,881.82/19,321.80 = 3,996.92/x
  3. Step 3: Cross multiply
    12,881.82x = 19,321.80 × 3,996.92
  4. Step 4: Simplify right side
    12,881.82x = 77,227,695.93
  5. Step 5: Solve for x
    x = 77,227,695.93/12,881.82
  6. Step 6: Final answer
    x = 5,995.09

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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.