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Finding the Fourth Proportional to 18,439.26, 27,626.01 and 7,741.98

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Solution

The fourth proportional to 18,439.26, 27,626.01 and 7,741.98 is: 11,599.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.26 : 27,626.01 = 7,741.98 : x
  2. Step 2: Convert to fraction form
    18,439.26/27,626.01 = 7,741.98/x
  3. Step 3: Cross multiply
    18,439.26x = 27,626.01 × 7,741.98
  4. Step 4: Simplify right side
    18,439.26x = 213,880,016.90
  5. Step 5: Solve for x
    x = 213,880,016.90/18,439.26
  6. Step 6: Final answer
    x = 11,599.16

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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.