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Finding the Fourth Proportional to 28,144.26, 38,835.68 and 16,211.46

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Solution

The fourth proportional to 28,144.26, 38,835.68 and 16,211.46 is: 22,369.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.26 : 38,835.68 = 16,211.46 : x
  2. Step 2: Convert to fraction form
    28,144.26/38,835.68 = 16,211.46/x
  3. Step 3: Cross multiply
    28,144.26x = 38,835.68 × 16,211.46
  4. Step 4: Simplify right side
    28,144.26x = 629,583,072.89
  5. Step 5: Solve for x
    x = 629,583,072.89/28,144.26
  6. Step 6: Final answer
    x = 22,369.86

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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.