Home / 18,961.68-28,425.08-7,272.56

Finding the Fourth Proportional to 18,961.68, 28,425.08 and 7,272.56

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Solution

The fourth proportional to 18,961.68, 28,425.08 and 7,272.56 is: 10,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.68 : 28,425.08 = 7,272.56 : x
  2. Step 2: Convert to fraction form
    18,961.68/28,425.08 = 7,272.56/x
  3. Step 3: Cross multiply
    18,961.68x = 28,425.08 × 7,272.56
  4. Step 4: Simplify right side
    18,961.68x = 206,723,099.80
  5. Step 5: Solve for x
    x = 206,723,099.80/18,961.68
  6. Step 6: Final answer
    x = 10,902.15

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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.