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Finding the Fourth Proportional to 34,321.92, 51,495.03 and 12,129.54

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Solution

The fourth proportional to 34,321.92, 51,495.03 and 12,129.54 is: 18,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,321.92 : 51,495.03 = 12,129.54 : x
  2. Step 2: Convert to fraction form
    34,321.92/51,495.03 = 12,129.54/x
  3. Step 3: Cross multiply
    34,321.92x = 51,495.03 × 12,129.54
  4. Step 4: Simplify right side
    34,321.92x = 624,611,026.19
  5. Step 5: Solve for x
    x = 624,611,026.19/34,321.92
  6. Step 6: Final answer
    x = 18,198.60

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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.