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Finding the Fourth Proportional to 21,763.25, 32,654.11 and 11,891.00

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Solution

The fourth proportional to 21,763.25, 32,654.11 and 11,891.00 is: 17,841.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,763.25 : 32,654.11 = 11,891.00 : x
  2. Step 2: Convert to fraction form
    21,763.25/32,654.11 = 11,891.00/x
  3. Step 3: Cross multiply
    21,763.25x = 32,654.11 × 11,891.00
  4. Step 4: Simplify right side
    21,763.25x = 388,289,923.02
  5. Step 5: Solve for x
    x = 388,289,923.02/21,763.25
  6. Step 6: Final answer
    x = 17,841.54

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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.