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Finding the Fourth Proportional to 21,978,600.30, 32,967,900.45 and 11,229,057.90

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Solution

The fourth proportional to 21,978,600.30, 32,967,900.45 and 11,229,057.90 is: 16,843,586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,978,600.30 : 32,967,900.45 = 11,229,057.90 : x
  2. Step 2: Convert to fraction form
    21,978,600.30/32,967,900.45 = 11,229,057.90/x
  3. Step 3: Cross multiply
    21,978,600.30x = 32,967,900.45 × 11,229,057.90
  4. Step 4: Simplify right side
    21,978,600.30x = 370,198,462,994,486.06
  5. Step 5: Solve for x
    x = 370,198,462,994,486.06/21,978,600.30
  6. Step 6: Final answer
    x = 16,843,586.85

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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.