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Finding the Fourth Proportional to 20,163.54, 30,248.54 and 7,019.67

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Solution

The fourth proportional to 20,163.54, 30,248.54 and 7,019.67 is: 10,530.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.54 : 30,248.54 = 7,019.67 : x
  2. Step 2: Convert to fraction form
    20,163.54/30,248.54 = 7,019.67/x
  3. Step 3: Cross multiply
    20,163.54x = 30,248.54 × 7,019.67
  4. Step 4: Simplify right side
    20,163.54x = 212,334,768.78
  5. Step 5: Solve for x
    x = 212,334,768.78/20,163.54
  6. Step 6: Final answer
    x = 10,530.63

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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.