Home / 27,193.32-40,781.34-8,721

Finding the Fourth Proportional to 27,193.32, 40,781.34 and 8,721

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Solution

The fourth proportional to 27,193.32, 40,781.34 and 8,721 is: 13,078.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,193.32 : 40,781.34 = 8,721 : x
  2. Step 2: Convert to fraction form
    27,193.32/40,781.34 = 8,721/x
  3. Step 3: Cross multiply
    27,193.32x = 40,781.34 × 8,721
  4. Step 4: Simplify right side
    27,193.32x = 355,654,066.14
  5. Step 5: Solve for x
    x = 355,654,066.14/27,193.32
  6. Step 6: Final answer
    x = 13,078.73

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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.