Home / 20,629.73-30,916.87-11,255.70

Finding the Fourth Proportional to 20,629.73, 30,916.87 and 11,255.70

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Solution

The fourth proportional to 20,629.73, 30,916.87 and 11,255.70 is: 16,868.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.73 : 30,916.87 = 11,255.70 : x
  2. Step 2: Convert to fraction form
    20,629.73/30,916.87 = 11,255.70/x
  3. Step 3: Cross multiply
    20,629.73x = 30,916.87 × 11,255.70
  4. Step 4: Simplify right side
    20,629.73x = 347,991,013.66
  5. Step 5: Solve for x
    x = 347,991,013.66/20,629.73
  6. Step 6: Final answer
    x = 16,868.42

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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.