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Finding the Fourth Proportional to 16,505,978.80, 24,758,968.20 and 12,254,450.80

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Solution

The fourth proportional to 16,505,978.80, 24,758,968.20 and 12,254,450.80 is: 18,381,676.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,505,978.80 : 24,758,968.20 = 12,254,450.80 : x
  2. Step 2: Convert to fraction form
    16,505,978.80/24,758,968.20 = 12,254,450.80/x
  3. Step 3: Cross multiply
    16,505,978.80x = 24,758,968.20 × 12,254,450.80
  4. Step 4: Simplify right side
    16,505,978.80x = 303,407,557,665,664.56
  5. Step 5: Solve for x
    x = 303,407,557,665,664.56/16,505,978.80
  6. Step 6: Final answer
    x = 18,381,676.20

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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.