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Finding the Fourth Proportional to 18,163.50, 27,245.26 and 7,219.50

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Solution

The fourth proportional to 18,163.50, 27,245.26 and 7,219.50 is: 10,829.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.50 : 27,245.26 = 7,219.50 : x
  2. Step 2: Convert to fraction form
    18,163.50/27,245.26 = 7,219.50/x
  3. Step 3: Cross multiply
    18,163.50x = 27,245.26 × 7,219.50
  4. Step 4: Simplify right side
    18,163.50x = 196,697,154.57
  5. Step 5: Solve for x
    x = 196,697,154.57/18,163.50
  6. Step 6: Final answer
    x = 10,829.25

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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.