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Finding the Fourth Proportional to 13,998.76, 20,998.14 and 5,233.56

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Solution

The fourth proportional to 13,998.76, 20,998.14 and 5,233.56 is: 7,850.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.76 : 20,998.14 = 5,233.56 : x
  2. Step 2: Convert to fraction form
    13,998.76/20,998.14 = 5,233.56/x
  3. Step 3: Cross multiply
    13,998.76x = 20,998.14 × 5,233.56
  4. Step 4: Simplify right side
    13,998.76x = 109,895,025.58
  5. Step 5: Solve for x
    x = 109,895,025.58/13,998.76
  6. Step 6: Final answer
    x = 7,850.34

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Similar ratio
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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.