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Finding the Fourth Proportional to 11,738,978.60, 17,608,467.90 and 7,260,002.60

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Solution

The fourth proportional to 11,738,978.60, 17,608,467.90 and 7,260,002.60 is: 10,890,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,738,978.60 : 17,608,467.90 = 7,260,002.60 : x
  2. Step 2: Convert to fraction form
    11,738,978.60/17,608,467.90 = 7,260,002.60/x
  3. Step 3: Cross multiply
    11,738,978.60x = 17,608,467.90 × 7,260,002.60
  4. Step 4: Simplify right side
    11,738,978.60x = 127,837,522,736,016.52
  5. Step 5: Solve for x
    x = 127,837,522,736,016.52/11,738,978.60
  6. Step 6: Final answer
    x = 10,890,003.90

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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.