Home / 20,500.96-30,730.88-7,163.60

Finding the Fourth Proportional to 20,500.96, 30,730.88 and 7,163.60

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Solution

The fourth proportional to 20,500.96, 30,730.88 and 7,163.60 is: 10,738.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.96 : 30,730.88 = 7,163.60 : x
  2. Step 2: Convert to fraction form
    20,500.96/30,730.88 = 7,163.60/x
  3. Step 3: Cross multiply
    20,500.96x = 30,730.88 × 7,163.60
  4. Step 4: Simplify right side
    20,500.96x = 220,143,731.97
  5. Step 5: Solve for x
    x = 220,143,731.97/20,500.96
  6. Step 6: Final answer
    x = 10,738.22

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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.