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Finding the Fourth Proportional to 14,630.82, 20,190.82 and 8,660.30

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Solution

The fourth proportional to 14,630.82, 20,190.82 and 8,660.30 is: 11,951.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,630.82 : 20,190.82 = 8,660.30 : x
  2. Step 2: Convert to fraction form
    14,630.82/20,190.82 = 8,660.30/x
  3. Step 3: Cross multiply
    14,630.82x = 20,190.82 × 8,660.30
  4. Step 4: Simplify right side
    14,630.82x = 174,858,558.45
  5. Step 5: Solve for x
    x = 174,858,558.45/14,630.82
  6. Step 6: Final answer
    x = 11,951.38

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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.