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Finding the Fourth Proportional to 10,998.27, 16,480.11 and 8,505.56

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Solution

The fourth proportional to 10,998.27, 16,480.11 and 8,505.56 is: 12,744.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.27 : 16,480.11 = 8,505.56 : x
  2. Step 2: Convert to fraction form
    10,998.27/16,480.11 = 8,505.56/x
  3. Step 3: Cross multiply
    10,998.27x = 16,480.11 × 8,505.56
  4. Step 4: Simplify right side
    10,998.27x = 140,172,564.41
  5. Step 5: Solve for x
    x = 140,172,564.41/10,998.27
  6. Step 6: Final answer
    x = 12,744.96

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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.