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Finding the Fourth Proportional to 14,942.22, 20,620.26 and 8,228.10

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Solution

The fourth proportional to 14,942.22, 20,620.26 and 8,228.10 is: 11,354.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,942.22 : 20,620.26 = 8,228.10 : x
  2. Step 2: Convert to fraction form
    14,942.22/20,620.26 = 8,228.10/x
  3. Step 3: Cross multiply
    14,942.22x = 20,620.26 × 8,228.10
  4. Step 4: Simplify right side
    14,942.22x = 169,665,561.31
  5. Step 5: Solve for x
    x = 169,665,561.31/14,942.22
  6. Step 6: Final answer
    x = 11,354.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.