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Finding the Fourth Proportional to 20,101.08, 30,162 and 9,015.48

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Solution

The fourth proportional to 20,101.08, 30,162 and 9,015.48 is: 13,527.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.08 : 30,162 = 9,015.48 : x
  2. Step 2: Convert to fraction form
    20,101.08/30,162 = 9,015.48/x
  3. Step 3: Cross multiply
    20,101.08x = 30,162 × 9,015.48
  4. Step 4: Simplify right side
    20,101.08x = 271,924,907.76
  5. Step 5: Solve for x
    x = 271,924,907.76/20,101.08
  6. Step 6: Final answer
    x = 13,527.88

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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.