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Finding the Fourth Proportional to 15,062.97, 20,786.15 and 8,348.54

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Solution

The fourth proportional to 15,062.97, 20,786.15 and 8,348.54 is: 11,520.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.97 : 20,786.15 = 8,348.54 : x
  2. Step 2: Convert to fraction form
    15,062.97/20,786.15 = 8,348.54/x
  3. Step 3: Cross multiply
    15,062.97x = 20,786.15 × 8,348.54
  4. Step 4: Simplify right side
    15,062.97x = 173,534,038.58
  5. Step 5: Solve for x
    x = 173,534,038.58/15,062.97
  6. Step 6: Final answer
    x = 11,520.57

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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.