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Finding the Fourth Proportional to 18,576.28, 27,861.18 and 7,328.62

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Solution

The fourth proportional to 18,576.28, 27,861.18 and 7,328.62 is: 10,991.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,576.28 : 27,861.18 = 7,328.62 : x
  2. Step 2: Convert to fraction form
    18,576.28/27,861.18 = 7,328.62/x
  3. Step 3: Cross multiply
    18,576.28x = 27,861.18 × 7,328.62
  4. Step 4: Simplify right side
    18,576.28x = 204,184,000.97
  5. Step 5: Solve for x
    x = 204,184,000.97/18,576.28
  6. Step 6: Final answer
    x = 10,991.65

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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.