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Finding the Fourth Proportional to 13,811,211.20, 20,715,002.40 and 4,227,550.40

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Solution

The fourth proportional to 13,811,211.20, 20,715,002.40 and 4,227,550.40 is: 6,340,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811,211.20 : 20,715,002.40 = 4,227,550.40 : x
  2. Step 2: Convert to fraction form
    13,811,211.20/20,715,002.40 = 4,227,550.40/x
  3. Step 3: Cross multiply
    13,811,211.20x = 20,715,002.40 × 4,227,550.40
  4. Step 4: Simplify right side
    13,811,211.20x = 87,573,716,682,120.97
  5. Step 5: Solve for x
    x = 87,573,716,682,120.97/13,811,211.20
  6. Step 6: Final answer
    x = 6,340,770.22

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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.