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Finding the Fourth Proportional to 18,662,835.20, 27,990,051.60 and 6,695,571.20

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Solution

The fourth proportional to 18,662,835.20, 27,990,051.60 and 6,695,571.20 is: 10,041,849.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662,835.20 : 27,990,051.60 = 6,695,571.20 : x
  2. Step 2: Convert to fraction form
    18,662,835.20/27,990,051.60 = 6,695,571.20/x
  3. Step 3: Cross multiply
    18,662,835.20x = 27,990,051.60 × 6,695,571.20
  4. Step 4: Simplify right side
    18,662,835.20x = 187,409,383,379,473.94
  5. Step 5: Solve for x
    x = 187,409,383,379,473.94/18,662,835.20
  6. Step 6: Final answer
    x = 10,041,849.56

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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.