Home / 12,919.11-19,376.15-3,556.73

Finding the Fourth Proportional to 12,919.11, 19,376.15 and 3,556.73

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Solution

The fourth proportional to 12,919.11, 19,376.15 and 3,556.73 is: 5,334.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.11 : 19,376.15 = 3,556.73 : x
  2. Step 2: Convert to fraction form
    12,919.11/19,376.15 = 3,556.73/x
  3. Step 3: Cross multiply
    12,919.11x = 19,376.15 × 3,556.73
  4. Step 4: Simplify right side
    12,919.11x = 68,915,619.33
  5. Step 5: Solve for x
    x = 68,915,619.33/12,919.11
  6. Step 6: Final answer
    x = 5,334.39

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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.