Home / 20,809,401.60-31,193,107.20-9,457,996.80

Finding the Fourth Proportional to 20,809,401.60, 31,193,107.20 and 9,457,996.80

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Solution

The fourth proportional to 20,809,401.60, 31,193,107.20 and 9,457,996.80 is: 14,177,452.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,401.60 : 31,193,107.20 = 9,457,996.80 : x
  2. Step 2: Convert to fraction form
    20,809,401.60/31,193,107.20 = 9,457,996.80/x
  3. Step 3: Cross multiply
    20,809,401.60x = 31,193,107.20 × 9,457,996.80
  4. Step 4: Simplify right side
    20,809,401.60x = 295,024,308,079,657
  5. Step 5: Solve for x
    x = 295,024,308,079,657/20,809,401.60
  6. Step 6: Final answer
    x = 14,177,452.76

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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.