Home / 19,121.96-28,663.21-13,843.87

Finding the Fourth Proportional to 19,121.96, 28,663.21 and 13,843.87

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Solution

The fourth proportional to 19,121.96, 28,663.21 and 13,843.87 is: 20,751.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.96 : 28,663.21 = 13,843.87 : x
  2. Step 2: Convert to fraction form
    19,121.96/28,663.21 = 13,843.87/x
  3. Step 3: Cross multiply
    19,121.96x = 28,663.21 × 13,843.87
  4. Step 4: Simplify right side
    19,121.96x = 396,809,753.02
  5. Step 5: Solve for x
    x = 396,809,753.02/19,121.96
  6. Step 6: Final answer
    x = 20,751.52

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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.