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Finding the Fourth Proportional to 29,986.20, 41,380.20 and 16,556.40

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Solution

The fourth proportional to 29,986.20, 41,380.20 and 16,556.40 is: 22,847.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,986.20 : 41,380.20 = 16,556.40 : x
  2. Step 2: Convert to fraction form
    29,986.20/41,380.20 = 16,556.40/x
  3. Step 3: Cross multiply
    29,986.20x = 41,380.20 × 16,556.40
  4. Step 4: Simplify right side
    29,986.20x = 685,107,143.28
  5. Step 5: Solve for x
    x = 685,107,143.28/29,986.20
  6. Step 6: Final answer
    x = 22,847.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.