Home / 13,644.38-20,436.56-11,277.56

Finding the Fourth Proportional to 13,644.38, 20,436.56 and 11,277.56

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Solution

The fourth proportional to 13,644.38, 20,436.56 and 11,277.56 is: 16,891.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.38 : 20,436.56 = 11,277.56 : x
  2. Step 2: Convert to fraction form
    13,644.38/20,436.56 = 11,277.56/x
  3. Step 3: Cross multiply
    13,644.38x = 20,436.56 × 11,277.56
  4. Step 4: Simplify right side
    13,644.38x = 230,474,531.59
  5. Step 5: Solve for x
    x = 230,474,531.59/13,644.38
  6. Step 6: Final answer
    x = 16,891.54

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1.5x scale

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.