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Finding the Fourth Proportional to 18,375.40, 27,563.10 and 5,227.60

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Solution

The fourth proportional to 18,375.40, 27,563.10 and 5,227.60 is: 7,841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.40 : 27,563.10 = 5,227.60 : x
  2. Step 2: Convert to fraction form
    18,375.40/27,563.10 = 5,227.60/x
  3. Step 3: Cross multiply
    18,375.40x = 27,563.10 × 5,227.60
  4. Step 4: Simplify right side
    18,375.40x = 144,088,861.56
  5. Step 5: Solve for x
    x = 144,088,861.56/18,375.40
  6. Step 6: Final answer
    x = 7,841.40

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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.