Home / 20,163.35-30,251.18-10,309.55

Finding the Fourth Proportional to 20,163.35, 30,251.18 and 10,309.55

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Solution

The fourth proportional to 20,163.35, 30,251.18 and 10,309.55 is: 15,467.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.35 : 30,251.18 = 10,309.55 : x
  2. Step 2: Convert to fraction form
    20,163.35/30,251.18 = 10,309.55/x
  3. Step 3: Cross multiply
    20,163.35x = 30,251.18 × 10,309.55
  4. Step 4: Simplify right side
    20,163.35x = 311,876,097.45
  5. Step 5: Solve for x
    x = 311,876,097.45/20,163.35
  6. Step 6: Final answer
    x = 15,467.47

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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.