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Finding the Fourth Proportional to 12,609.96, 17,401.50 and 8,630.97

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Solution

The fourth proportional to 12,609.96, 17,401.50 and 8,630.97 is: 11,910.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.96 : 17,401.50 = 8,630.97 : x
  2. Step 2: Convert to fraction form
    12,609.96/17,401.50 = 8,630.97/x
  3. Step 3: Cross multiply
    12,609.96x = 17,401.50 × 8,630.97
  4. Step 4: Simplify right side
    12,609.96x = 150,191,824.46
  5. Step 5: Solve for x
    x = 150,191,824.46/12,609.96
  6. Step 6: Final answer
    x = 11,910.57

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Half scale
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Double scale
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Similar ratio
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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.