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Finding the Fourth Proportional to 13,354.88, 20,028.90 and 3,994.88

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Solution

The fourth proportional to 13,354.88, 20,028.90 and 3,994.88 is: 5,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.88 : 20,028.90 = 3,994.88 : x
  2. Step 2: Convert to fraction form
    13,354.88/20,028.90 = 3,994.88/x
  3. Step 3: Cross multiply
    13,354.88x = 20,028.90 × 3,994.88
  4. Step 4: Simplify right side
    13,354.88x = 80,013,052.03
  5. Step 5: Solve for x
    x = 80,013,052.03/13,354.88
  6. Step 6: Final answer
    x = 5,991.30

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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.