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Finding the Fourth Proportional to 21,379.10, 32,051.34 and 8,908.49

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Solution

The fourth proportional to 21,379.10, 32,051.34 and 8,908.49 is: 13,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.10 : 32,051.34 = 8,908.49 : x
  2. Step 2: Convert to fraction form
    21,379.10/32,051.34 = 8,908.49/x
  3. Step 3: Cross multiply
    21,379.10x = 32,051.34 × 8,908.49
  4. Step 4: Simplify right side
    21,379.10x = 285,529,122.00
  5. Step 5: Solve for x
    x = 285,529,122.00/21,379.10
  6. Step 6: Final answer
    x = 13,355.53

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.