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Finding the Fourth Proportional to 11,220.68, 16,806.11 and 7,259.19

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Solution

The fourth proportional to 11,220.68, 16,806.11 and 7,259.19 is: 10,872.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.68 : 16,806.11 = 7,259.19 : x
  2. Step 2: Convert to fraction form
    11,220.68/16,806.11 = 7,259.19/x
  3. Step 3: Cross multiply
    11,220.68x = 16,806.11 × 7,259.19
  4. Step 4: Simplify right side
    11,220.68x = 121,998,709.35
  5. Step 5: Solve for x
    x = 121,998,709.35/11,220.68
  6. Step 6: Final answer
    x = 10,872.67

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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.