Home / 10,912.73-16,369.65-3,121.34

Finding the Fourth Proportional to 10,912.73, 16,369.65 and 3,121.34

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Solution

The fourth proportional to 10,912.73, 16,369.65 and 3,121.34 is: 4,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.73 : 16,369.65 = 3,121.34 : x
  2. Step 2: Convert to fraction form
    10,912.73/16,369.65 = 3,121.34/x
  3. Step 3: Cross multiply
    10,912.73x = 16,369.65 × 3,121.34
  4. Step 4: Simplify right side
    10,912.73x = 51,095,161.48
  5. Step 5: Solve for x
    x = 51,095,161.48/10,912.73
  6. Step 6: Final answer
    x = 4,682.16

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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.