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Finding the Fourth Proportional to 18,722, 28,082.86 and 7,626.08

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Solution

The fourth proportional to 18,722, 28,082.86 and 7,626.08 is: 11,439.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722 : 28,082.86 = 7,626.08 : x
  2. Step 2: Convert to fraction form
    18,722/28,082.86 = 7,626.08/x
  3. Step 3: Cross multiply
    18,722x = 28,082.86 × 7,626.08
  4. Step 4: Simplify right side
    18,722x = 214,162,136.99
  5. Step 5: Solve for x
    x = 214,162,136.99/18,722
  6. Step 6: Final answer
    x = 11,439.06

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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.