Home / 20,611.30-30,906.60-10,082.12

Finding the Fourth Proportional to 20,611.30, 30,906.60 and 10,082.12

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Solution

The fourth proportional to 20,611.30, 30,906.60 and 10,082.12 is: 15,118.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.30 : 30,906.60 = 10,082.12 : x
  2. Step 2: Convert to fraction form
    20,611.30/30,906.60 = 10,082.12/x
  3. Step 3: Cross multiply
    20,611.30x = 30,906.60 × 10,082.12
  4. Step 4: Simplify right side
    20,611.30x = 311,604,049.99
  5. Step 5: Solve for x
    x = 311,604,049.99/20,611.30
  6. Step 6: Final answer
    x = 15,118.12

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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.