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Finding the Fourth Proportional to 13,794.30, 20,691.65 and 3,933.16

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Solution

The fourth proportional to 13,794.30, 20,691.65 and 3,933.16 is: 5,899.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,794.30 : 20,691.65 = 3,933.16 : x
  2. Step 2: Convert to fraction form
    13,794.30/20,691.65 = 3,933.16/x
  3. Step 3: Cross multiply
    13,794.30x = 20,691.65 × 3,933.16
  4. Step 4: Simplify right side
    13,794.30x = 81,383,528.22
  5. Step 5: Solve for x
    x = 81,383,528.22/13,794.30
  6. Step 6: Final answer
    x = 5,899.79

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1.5x scale

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.