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Finding the Fourth Proportional to 18,401.20, 27,591.72 and 7,296.64

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Solution

The fourth proportional to 18,401.20, 27,591.72 and 7,296.64 is: 10,940.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,401.20 : 27,591.72 = 7,296.64 : x
  2. Step 2: Convert to fraction form
    18,401.20/27,591.72 = 7,296.64/x
  3. Step 3: Cross multiply
    18,401.20x = 27,591.72 × 7,296.64
  4. Step 4: Simplify right side
    18,401.20x = 201,326,847.82
  5. Step 5: Solve for x
    x = 201,326,847.82/18,401.20
  6. Step 6: Final answer
    x = 10,940.96

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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.