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Finding the Fourth Proportional to 13,793.88, 20,682.18 and 9,108.92

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Solution

The fourth proportional to 13,793.88, 20,682.18 and 9,108.92 is: 13,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,793.88 : 20,682.18 = 9,108.92 : x
  2. Step 2: Convert to fraction form
    13,793.88/20,682.18 = 9,108.92/x
  3. Step 3: Cross multiply
    13,793.88x = 20,682.18 × 9,108.92
  4. Step 4: Simplify right side
    13,793.88x = 188,392,323.05
  5. Step 5: Solve for x
    x = 188,392,323.05/13,793.88
  6. Step 6: Final answer
    x = 13,657.67

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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.