Home / 20,644.05-28,488.03-11,212.41

Finding the Fourth Proportional to 20,644.05, 28,488.03 and 11,212.41

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Solution

The fourth proportional to 20,644.05, 28,488.03 and 11,212.41 is: 15,472.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.05 : 28,488.03 = 11,212.41 : x
  2. Step 2: Convert to fraction form
    20,644.05/28,488.03 = 11,212.41/x
  3. Step 3: Cross multiply
    20,644.05x = 28,488.03 × 11,212.41
  4. Step 4: Simplify right side
    20,644.05x = 319,419,472.45
  5. Step 5: Solve for x
    x = 319,419,472.45/20,644.05
  6. Step 6: Final answer
    x = 15,472.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.