Home / 20,817.35-28,737.33-13,273.82

Finding the Fourth Proportional to 20,817.35, 28,737.33 and 13,273.82

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Solution

The fourth proportional to 20,817.35, 28,737.33 and 13,273.82 is: 18,323.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.35 : 28,737.33 = 13,273.82 : x
  2. Step 2: Convert to fraction form
    20,817.35/28,737.33 = 13,273.82/x
  3. Step 3: Cross multiply
    20,817.35x = 28,737.33 × 13,273.82
  4. Step 4: Simplify right side
    20,817.35x = 381,454,296.31
  5. Step 5: Solve for x
    x = 381,454,296.31/20,817.35
  6. Step 6: Final answer
    x = 18,323.86

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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.