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Finding the Fourth Proportional to 11,625.96, 17,406.98 and 8,119.48

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Solution

The fourth proportional to 11,625.96, 17,406.98 and 8,119.48 is: 12,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,625.96 : 17,406.98 = 8,119.48 : x
  2. Step 2: Convert to fraction form
    11,625.96/17,406.98 = 8,119.48/x
  3. Step 3: Cross multiply
    11,625.96x = 17,406.98 × 8,119.48
  4. Step 4: Simplify right side
    11,625.96x = 141,335,625.97
  5. Step 5: Solve for x
    x = 141,335,625.97/11,625.96
  6. Step 6: Final answer
    x = 12,156.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.