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Finding the Fourth Proportional to 20,051.55, 30,076.92 and 8,361.90

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Solution

The fourth proportional to 20,051.55, 30,076.92 and 8,361.90 is: 12,542.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,051.55 : 30,076.92 = 8,361.90 : x
  2. Step 2: Convert to fraction form
    20,051.55/30,076.92 = 8,361.90/x
  3. Step 3: Cross multiply
    20,051.55x = 30,076.92 × 8,361.90
  4. Step 4: Simplify right side
    20,051.55x = 251,500,197.35
  5. Step 5: Solve for x
    x = 251,500,197.35/20,051.55
  6. Step 6: Final answer
    x = 12,542.68

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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.