Home / 20,099.05-30,144.32-6,770.80

Finding the Fourth Proportional to 20,099.05, 30,144.32 and 6,770.80

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Solution

The fourth proportional to 20,099.05, 30,144.32 and 6,770.80 is: 10,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.05 : 30,144.32 = 6,770.80 : x
  2. Step 2: Convert to fraction form
    20,099.05/30,144.32 = 6,770.80/x
  3. Step 3: Cross multiply
    20,099.05x = 30,144.32 × 6,770.80
  4. Step 4: Simplify right side
    20,099.05x = 204,101,191.07
  5. Step 5: Solve for x
    x = 204,101,191.07/20,099.05
  6. Step 6: Final answer
    x = 10,154.77

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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.