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Finding the Fourth Proportional to 20,163.63, 30,226.01 and 9,630.80

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Solution

The fourth proportional to 20,163.63, 30,226.01 and 9,630.80 is: 14,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.63 : 30,226.01 = 9,630.80 : x
  2. Step 2: Convert to fraction form
    20,163.63/30,226.01 = 9,630.80/x
  3. Step 3: Cross multiply
    20,163.63x = 30,226.01 × 9,630.80
  4. Step 4: Simplify right side
    20,163.63x = 291,100,625.34
  5. Step 5: Solve for x
    x = 291,100,625.34/20,163.63
  6. Step 6: Final answer
    x = 14,436.91

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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.