Home / 20,864.82-28,793.45-12,481.32

Finding the Fourth Proportional to 20,864.82, 28,793.45 and 12,481.32

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Solution

The fourth proportional to 20,864.82, 28,793.45 and 12,481.32 is: 17,224.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.82 : 28,793.45 = 12,481.32 : x
  2. Step 2: Convert to fraction form
    20,864.82/28,793.45 = 12,481.32/x
  3. Step 3: Cross multiply
    20,864.82x = 28,793.45 × 12,481.32
  4. Step 4: Simplify right side
    20,864.82x = 359,380,263.35
  5. Step 5: Solve for x
    x = 359,380,263.35/20,864.82
  6. Step 6: Final answer
    x = 17,224.22

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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.