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Finding the Fourth Proportional to 20,593.12, 30,895.44 and 8,105.44

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Solution

The fourth proportional to 20,593.12, 30,895.44 and 8,105.44 is: 12,160.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.12 : 30,895.44 = 8,105.44 : x
  2. Step 2: Convert to fraction form
    20,593.12/30,895.44 = 8,105.44/x
  3. Step 3: Cross multiply
    20,593.12x = 30,895.44 × 8,105.44
  4. Step 4: Simplify right side
    20,593.12x = 250,421,135.19
  5. Step 5: Solve for x
    x = 250,421,135.19/20,593.12
  6. Step 6: Final answer
    x = 12,160.43

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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.