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Finding the Fourth Proportional to 15,058.96, 20,780.49 and 8,344.19

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Solution

The fourth proportional to 15,058.96, 20,780.49 and 8,344.19 is: 11,514.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,058.96 : 20,780.49 = 8,344.19 : x
  2. Step 2: Convert to fraction form
    15,058.96/20,780.49 = 8,344.19/x
  3. Step 3: Cross multiply
    15,058.96x = 20,780.49 × 8,344.19
  4. Step 4: Simplify right side
    15,058.96x = 173,396,356.85
  5. Step 5: Solve for x
    x = 173,396,356.85/15,058.96
  6. Step 6: Final answer
    x = 11,514.50

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1.5x scale

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.