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Finding the Fourth Proportional to 18,170.88, 25,086.15 and 11,803.20

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Solution

The fourth proportional to 18,170.88, 25,086.15 and 11,803.20 is: 16,295.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,170.88 : 25,086.15 = 11,803.20 : x
  2. Step 2: Convert to fraction form
    18,170.88/25,086.15 = 11,803.20/x
  3. Step 3: Cross multiply
    18,170.88x = 25,086.15 × 11,803.20
  4. Step 4: Simplify right side
    18,170.88x = 296,096,845.68
  5. Step 5: Solve for x
    x = 296,096,845.68/18,170.88
  6. Step 6: Final answer
    x = 16,295.13

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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.