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Finding the Fourth Proportional to 15,193.92, 20,967.48 and 8,479.44

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Solution

The fourth proportional to 15,193.92, 20,967.48 and 8,479.44 is: 11,701.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,193.92 : 20,967.48 = 8,479.44 : x
  2. Step 2: Convert to fraction form
    15,193.92/20,967.48 = 8,479.44/x
  3. Step 3: Cross multiply
    15,193.92x = 20,967.48 × 8,479.44
  4. Step 4: Simplify right side
    15,193.92x = 177,792,488.61
  5. Step 5: Solve for x
    x = 177,792,488.61/15,193.92
  6. Step 6: Final answer
    x = 11,701.55

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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.