Home / 20,944.14-31,375.08-12,160.68

Finding the Fourth Proportional to 20,944.14, 31,375.08 and 12,160.68

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Solution

The fourth proportional to 20,944.14, 31,375.08 and 12,160.68 is: 18,217.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,944.14 : 31,375.08 = 12,160.68 : x
  2. Step 2: Convert to fraction form
    20,944.14/31,375.08 = 12,160.68/x
  3. Step 3: Cross multiply
    20,944.14x = 31,375.08 × 12,160.68
  4. Step 4: Simplify right side
    20,944.14x = 381,542,307.85
  5. Step 5: Solve for x
    x = 381,542,307.85/20,944.14
  6. Step 6: Final answer
    x = 18,217.14

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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.