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Finding the Fourth Proportional to 15,058.41, 20,781.06 and 8,343.41

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Solution

The fourth proportional to 15,058.41, 20,781.06 and 8,343.41 is: 11,514.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,058.41 : 20,781.06 = 8,343.41 : x
  2. Step 2: Convert to fraction form
    15,058.41/20,781.06 = 8,343.41/x
  3. Step 3: Cross multiply
    15,058.41x = 20,781.06 × 8,343.41
  4. Step 4: Simplify right side
    15,058.41x = 173,384,768.62
  5. Step 5: Solve for x
    x = 173,384,768.62/15,058.41
  6. Step 6: Final answer
    x = 11,514.15

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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.