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Finding the Fourth Proportional to 19,757.88, 29,650.16 and 7,287.89

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Solution

The fourth proportional to 19,757.88, 29,650.16 and 7,287.89 is: 10,936.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,757.88 : 29,650.16 = 7,287.89 : x
  2. Step 2: Convert to fraction form
    19,757.88/29,650.16 = 7,287.89/x
  3. Step 3: Cross multiply
    19,757.88x = 29,650.16 × 7,287.89
  4. Step 4: Simplify right side
    19,757.88x = 216,086,919.87
  5. Step 5: Solve for x
    x = 216,086,919.87/19,757.88
  6. Step 6: Final answer
    x = 10,936.75

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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.