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Finding the Fourth Proportional to 13,786,471.80, 20,679,707.70 and 3,551,311.80

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Solution

The fourth proportional to 13,786,471.80, 20,679,707.70 and 3,551,311.80 is: 5,326,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786,471.80 : 20,679,707.70 = 3,551,311.80 : x
  2. Step 2: Convert to fraction form
    13,786,471.80/20,679,707.70 = 3,551,311.80/x
  3. Step 3: Cross multiply
    13,786,471.80x = 20,679,707.70 × 3,551,311.80
  4. Step 4: Simplify right side
    13,786,471.80x = 73,440,089,975,560.86
  5. Step 5: Solve for x
    x = 73,440,089,975,560.86/13,786,471.80
  6. Step 6: Final answer
    x = 5,326,967.70

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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.