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Finding the Fourth Proportional to 18,662,724.60, 27,994,086.90 and 5,199,552.60

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Solution

The fourth proportional to 18,662,724.60, 27,994,086.90 and 5,199,552.60 is: 7,799,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662,724.60 : 27,994,086.90 = 5,199,552.60 : x
  2. Step 2: Convert to fraction form
    18,662,724.60/27,994,086.90 = 5,199,552.60/x
  3. Step 3: Cross multiply
    18,662,724.60x = 27,994,086.90 × 5,199,552.60
  4. Step 4: Simplify right side
    18,662,724.60x = 145,556,727,325,520.91
  5. Step 5: Solve for x
    x = 145,556,727,325,520.91/18,662,724.60
  6. Step 6: Final answer
    x = 7,799,328.90

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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.