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Finding the Fourth Proportional to 11,846,976.40, 17,770,464.60 and 8,020,601.20

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Solution

The fourth proportional to 11,846,976.40, 17,770,464.60 and 8,020,601.20 is: 12,030,901.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,846,976.40 : 17,770,464.60 = 8,020,601.20 : x
  2. Step 2: Convert to fraction form
    11,846,976.40/17,770,464.60 = 8,020,601.20/x
  3. Step 3: Cross multiply
    11,846,976.40x = 17,770,464.60 × 8,020,601.20
  4. Step 4: Simplify right side
    11,846,976.40x = 142,529,809,695,317.53
  5. Step 5: Solve for x
    x = 142,529,809,695,317.53/11,846,976.40
  6. Step 6: Final answer
    x = 12,030,901.80

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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.