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Finding the Fourth Proportional to 15,194.85, 20,968.88 and 8,480.46

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Solution

The fourth proportional to 15,194.85, 20,968.88 and 8,480.46 is: 11,703.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,194.85 : 20,968.88 = 8,480.46 : x
  2. Step 2: Convert to fraction form
    15,194.85/20,968.88 = 8,480.46/x
  3. Step 3: Cross multiply
    15,194.85x = 20,968.88 × 8,480.46
  4. Step 4: Simplify right side
    15,194.85x = 177,825,705.68
  5. Step 5: Solve for x
    x = 177,825,705.68/15,194.85
  6. Step 6: Final answer
    x = 11,703.02

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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.