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Finding the Fourth Proportional to 20,249.84, 30,354.60 and 14,080.88

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Solution

The fourth proportional to 20,249.84, 30,354.60 and 14,080.88 is: 21,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.84 : 30,354.60 = 14,080.88 : x
  2. Step 2: Convert to fraction form
    20,249.84/30,354.60 = 14,080.88/x
  3. Step 3: Cross multiply
    20,249.84x = 30,354.60 × 14,080.88
  4. Step 4: Simplify right side
    20,249.84x = 427,419,480.05
  5. Step 5: Solve for x
    x = 427,419,480.05/20,249.84
  6. Step 6: Final answer
    x = 21,107.30

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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.