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Finding the Fourth Proportional to 18,361.14, 27,504.45 and 8,486.70

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Solution

The fourth proportional to 18,361.14, 27,504.45 and 8,486.70 is: 12,712.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.14 : 27,504.45 = 8,486.70 : x
  2. Step 2: Convert to fraction form
    18,361.14/27,504.45 = 8,486.70/x
  3. Step 3: Cross multiply
    18,361.14x = 27,504.45 × 8,486.70
  4. Step 4: Simplify right side
    18,361.14x = 233,422,015.82
  5. Step 5: Solve for x
    x = 233,422,015.82/18,361.14
  6. Step 6: Final answer
    x = 12,712.83

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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.