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Finding the Fourth Proportional to 13,905.14, 20,851.22 and 8,063.42

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Solution

The fourth proportional to 13,905.14, 20,851.22 and 8,063.42 is: 12,091.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.14 : 20,851.22 = 8,063.42 : x
  2. Step 2: Convert to fraction form
    13,905.14/20,851.22 = 8,063.42/x
  3. Step 3: Cross multiply
    13,905.14x = 20,851.22 × 8,063.42
  4. Step 4: Simplify right side
    13,905.14x = 168,132,144.37
  5. Step 5: Solve for x
    x = 168,132,144.37/13,905.14
  6. Step 6: Final answer
    x = 12,091.37

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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.