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Finding the Fourth Proportional to 34,405.38, 51,608.34 and 13,628.88

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Solution

The fourth proportional to 34,405.38, 51,608.34 and 13,628.88 is: 20,443.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,405.38 : 51,608.34 = 13,628.88 : x
  2. Step 2: Convert to fraction form
    34,405.38/51,608.34 = 13,628.88/x
  3. Step 3: Cross multiply
    34,405.38x = 51,608.34 × 13,628.88
  4. Step 4: Simplify right side
    34,405.38x = 703,363,872.86
  5. Step 5: Solve for x
    x = 703,363,872.86/34,405.38
  6. Step 6: Final answer
    x = 20,443.43

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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.