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Finding the Fourth Proportional to 15,062.42, 20,786.31 and 8,348.17

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Solution

The fourth proportional to 15,062.42, 20,786.31 and 8,348.17 is: 11,520.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.42 : 20,786.31 = 8,348.17 : x
  2. Step 2: Convert to fraction form
    15,062.42/20,786.31 = 8,348.17/x
  3. Step 3: Cross multiply
    15,062.42x = 20,786.31 × 8,348.17
  4. Step 4: Simplify right side
    15,062.42x = 173,527,649.55
  5. Step 5: Solve for x
    x = 173,527,649.55/15,062.42
  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.