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Finding the Fourth Proportional to 19,110.88, 28,644.69 and 9,731.09

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Solution

The fourth proportional to 19,110.88, 28,644.69 and 9,731.09 is: 14,585.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,110.88 : 28,644.69 = 9,731.09 : x
  2. Step 2: Convert to fraction form
    19,110.88/28,644.69 = 9,731.09/x
  3. Step 3: Cross multiply
    19,110.88x = 28,644.69 × 9,731.09
  4. Step 4: Simplify right side
    19,110.88x = 278,743,949.68
  5. Step 5: Solve for x
    x = 278,743,949.68/19,110.88
  6. Step 6: Final answer
    x = 14,585.61

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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.