Home / 12,758.96-19,138.44-3,993.92

Finding the Fourth Proportional to 12,758.96, 19,138.44 and 3,993.92

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Solution

The fourth proportional to 12,758.96, 19,138.44 and 3,993.92 is: 5,990.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.96 : 19,138.44 = 3,993.92 : x
  2. Step 2: Convert to fraction form
    12,758.96/19,138.44 = 3,993.92/x
  3. Step 3: Cross multiply
    12,758.96x = 19,138.44 × 3,993.92
  4. Step 4: Simplify right side
    12,758.96x = 76,437,398.28
  5. Step 5: Solve for x
    x = 76,437,398.28/12,758.96
  6. Step 6: Final answer
    x = 5,990.88

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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.