Home / 20,704,705.20-31,056,766.20-9,345,135.60

Finding the Fourth Proportional to 20,704,705.20, 31,056,766.20 and 9,345,135.60

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Solution

The fourth proportional to 20,704,705.20, 31,056,766.20 and 9,345,135.60 is: 14,017,571.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704,705.20 : 31,056,766.20 = 9,345,135.60 : x
  2. Step 2: Convert to fraction form
    20,704,705.20/31,056,766.20 = 9,345,135.60/x
  3. Step 3: Cross multiply
    20,704,705.20x = 31,056,766.20 × 9,345,135.60
  4. Step 4: Simplify right side
    20,704,705.20x = 290,229,691,436,496.69
  5. Step 5: Solve for x
    x = 290,229,691,436,496.69/20,704,705.20
  6. Step 6: Final answer
    x = 14,017,571.79

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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.