Home / 20,141.55-27,788.94-12,183.30

Finding the Fourth Proportional to 20,141.55, 27,788.94 and 12,183.30

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Solution

The fourth proportional to 20,141.55, 27,788.94 and 12,183.30 is: 16,809.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.55 : 27,788.94 = 12,183.30 : x
  2. Step 2: Convert to fraction form
    20,141.55/27,788.94 = 12,183.30/x
  3. Step 3: Cross multiply
    20,141.55x = 27,788.94 × 12,183.30
  4. Step 4: Simplify right side
    20,141.55x = 338,560,992.70
  5. Step 5: Solve for x
    x = 338,560,992.70/20,141.55
  6. Step 6: Final answer
    x = 16,809.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.