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Finding the Fourth Proportional to 18,046.72, 27,078.16 and 11,471.20

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Solution

The fourth proportional to 18,046.72, 27,078.16 and 11,471.20 is: 17,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,046.72 : 27,078.16 = 11,471.20 : x
  2. Step 2: Convert to fraction form
    18,046.72/27,078.16 = 11,471.20/x
  3. Step 3: Cross multiply
    18,046.72x = 27,078.16 × 11,471.20
  4. Step 4: Simplify right side
    18,046.72x = 310,618,988.99
  5. Step 5: Solve for x
    x = 310,618,988.99/18,046.72
  6. Step 6: Final answer
    x = 17,211.94

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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.