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Finding the Fourth Proportional to 18,666.83, 27,986.34 and 8,800.49

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Solution

The fourth proportional to 18,666.83, 27,986.34 and 8,800.49 is: 13,194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.83 : 27,986.34 = 8,800.49 : x
  2. Step 2: Convert to fraction form
    18,666.83/27,986.34 = 8,800.49/x
  3. Step 3: Cross multiply
    18,666.83x = 27,986.34 × 8,800.49
  4. Step 4: Simplify right side
    18,666.83x = 246,293,505.31
  5. Step 5: Solve for x
    x = 246,293,505.31/18,666.83
  6. Step 6: Final answer
    x = 13,194.18

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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.