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Finding the Fourth Proportional to 19,938, 29,919.96 and 7,626

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Solution

The fourth proportional to 19,938, 29,919.96 and 7,626 is: 11,443.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938 : 29,919.96 = 7,626 : x
  2. Step 2: Convert to fraction form
    19,938/29,919.96 = 7,626/x
  3. Step 3: Cross multiply
    19,938x = 29,919.96 × 7,626
  4. Step 4: Simplify right side
    19,938x = 228,169,614.96
  5. Step 5: Solve for x
    x = 228,169,614.96/19,938
  6. Step 6: Final answer
    x = 11,443.96

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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.