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Finding the Fourth Proportional to 18,008.40, 27,009.18 and 7,627.44

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Solution

The fourth proportional to 18,008.40, 27,009.18 and 7,627.44 is: 11,439.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008.40 : 27,009.18 = 7,627.44 : x
  2. Step 2: Convert to fraction form
    18,008.40/27,009.18 = 7,627.44/x
  3. Step 3: Cross multiply
    18,008.40x = 27,009.18 × 7,627.44
  4. Step 4: Simplify right side
    18,008.40x = 206,010,899.90
  5. Step 5: Solve for x
    x = 206,010,899.90/18,008.40
  6. Step 6: Final answer
    x = 11,439.71

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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.