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Finding the Fourth Proportional to 18,126.20, 27,181.20 and 7,029.20

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Solution

The fourth proportional to 18,126.20, 27,181.20 and 7,029.20 is: 10,540.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.20 : 27,181.20 = 7,029.20 : x
  2. Step 2: Convert to fraction form
    18,126.20/27,181.20 = 7,029.20/x
  3. Step 3: Cross multiply
    18,126.20x = 27,181.20 × 7,029.20
  4. Step 4: Simplify right side
    18,126.20x = 191,062,091.04
  5. Step 5: Solve for x
    x = 191,062,091.04/18,126.20
  6. Step 6: Final answer
    x = 10,540.66

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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.