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Finding the Fourth Proportional to 18,084.70, 27,078.45 and 11,475.10

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Solution

The fourth proportional to 18,084.70, 27,078.45 and 11,475.10 is: 17,181.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,084.70 : 27,078.45 = 11,475.10 : x
  2. Step 2: Convert to fraction form
    18,084.70/27,078.45 = 11,475.10/x
  3. Step 3: Cross multiply
    18,084.70x = 27,078.45 × 11,475.10
  4. Step 4: Simplify right side
    18,084.70x = 310,727,921.60
  5. Step 5: Solve for x
    x = 310,727,921.60/18,084.70
  6. Step 6: Final answer
    x = 17,181.81

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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.