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Finding the Fourth Proportional to 14,648.97, 20,212.07 and 8,679.60

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Solution

The fourth proportional to 14,648.97, 20,212.07 and 8,679.60 is: 11,975.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,648.97 : 20,212.07 = 8,679.60 : x
  2. Step 2: Convert to fraction form
    14,648.97/20,212.07 = 8,679.60/x
  3. Step 3: Cross multiply
    14,648.97x = 20,212.07 × 8,679.60
  4. Step 4: Simplify right side
    14,648.97x = 175,432,755.00
  5. Step 5: Solve for x
    x = 175,432,755.00/14,648.97
  6. Step 6: Final answer
    x = 11,975.78

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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.