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Finding the Fourth Proportional to 20,162.89, 30,241.09 and 6,311.89

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Solution

The fourth proportional to 20,162.89, 30,241.09 and 6,311.89 is: 9,466.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.89 : 30,241.09 = 6,311.89 : x
  2. Step 2: Convert to fraction form
    20,162.89/30,241.09 = 6,311.89/x
  3. Step 3: Cross multiply
    20,162.89x = 30,241.09 × 6,311.89
  4. Step 4: Simplify right side
    20,162.89x = 190,878,291.39
  5. Step 5: Solve for x
    x = 190,878,291.39/20,162.89
  6. Step 6: Final answer
    x = 9,466.81

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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.