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Finding the Fourth Proportional to 18,187.66, 25,100.13 and 11,380.60

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Solution

The fourth proportional to 18,187.66, 25,100.13 and 11,380.60 is: 15,705.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.66 : 25,100.13 = 11,380.60 : x
  2. Step 2: Convert to fraction form
    18,187.66/25,100.13 = 11,380.60/x
  3. Step 3: Cross multiply
    18,187.66x = 25,100.13 × 11,380.60
  4. Step 4: Simplify right side
    18,187.66x = 285,654,539.48
  5. Step 5: Solve for x
    x = 285,654,539.48/18,187.66
  6. Step 6: Final answer
    x = 15,705.95

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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.