Home / 12,719.40-19,081.82-4,286.73

Finding the Fourth Proportional to 12,719.40, 19,081.82 and 4,286.73

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Solution

The fourth proportional to 12,719.40, 19,081.82 and 4,286.73 is: 6,431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.40 : 19,081.82 = 4,286.73 : x
  2. Step 2: Convert to fraction form
    12,719.40/19,081.82 = 4,286.73/x
  3. Step 3: Cross multiply
    12,719.40x = 19,081.82 × 4,286.73
  4. Step 4: Simplify right side
    12,719.40x = 81,798,610.25
  5. Step 5: Solve for x
    x = 81,798,610.25/12,719.40
  6. Step 6: Final answer
    x = 6,431.01

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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.