Home / 20,708.05-28,557.33-13,917.41

Finding the Fourth Proportional to 20,708.05, 28,557.33 and 13,917.41

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Solution

The fourth proportional to 20,708.05, 28,557.33 and 13,917.41 is: 19,192.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.05 : 28,557.33 = 13,917.41 : x
  2. Step 2: Convert to fraction form
    20,708.05/28,557.33 = 13,917.41/x
  3. Step 3: Cross multiply
    20,708.05x = 28,557.33 × 13,917.41
  4. Step 4: Simplify right side
    20,708.05x = 397,444,000.53
  5. Step 5: Solve for x
    x = 397,444,000.53/20,708.05
  6. Step 6: Final answer
    x = 19,192.73

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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.