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Finding the Fourth Proportional to 20,073.30, 30,109.94 and 8,380.14

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Solution

The fourth proportional to 20,073.30, 30,109.94 and 8,380.14 is: 12,570.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,073.30 : 30,109.94 = 8,380.14 : x
  2. Step 2: Convert to fraction form
    20,073.30/30,109.94 = 8,380.14/x
  3. Step 3: Cross multiply
    20,073.30x = 30,109.94 × 8,380.14
  4. Step 4: Simplify right side
    20,073.30x = 252,325,512.59
  5. Step 5: Solve for x
    x = 252,325,512.59/20,073.30
  6. Step 6: Final answer
    x = 12,570.21

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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.