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Finding the Fourth Proportional to 18,518.67, 27,743.03 and 9,147.75

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Solution

The fourth proportional to 18,518.67, 27,743.03 and 9,147.75 is: 13,704.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.67 : 27,743.03 = 9,147.75 : x
  2. Step 2: Convert to fraction form
    18,518.67/27,743.03 = 9,147.75/x
  3. Step 3: Cross multiply
    18,518.67x = 27,743.03 × 9,147.75
  4. Step 4: Simplify right side
    18,518.67x = 253,786,256.94
  5. Step 5: Solve for x
    x = 253,786,256.94/18,518.67
  6. Step 6: Final answer
    x = 13,704.35

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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.