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Finding the Fourth Proportional to 20,290.80, 30,408.41 and 11,410.44

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Solution

The fourth proportional to 20,290.80, 30,408.41 and 11,410.44 is: 17,100.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.80 : 30,408.41 = 11,410.44 : x
  2. Step 2: Convert to fraction form
    20,290.80/30,408.41 = 11,410.44/x
  3. Step 3: Cross multiply
    20,290.80x = 30,408.41 × 11,410.44
  4. Step 4: Simplify right side
    20,290.80x = 346,973,508.87
  5. Step 5: Solve for x
    x = 346,973,508.87/20,290.80
  6. Step 6: Final answer
    x = 17,100.04

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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.