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Finding the Fourth Proportional to 18,469.16, 27,712.40 and 9,104.07

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Solution

The fourth proportional to 18,469.16, 27,712.40 and 9,104.07 is: 13,660.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.16 : 27,712.40 = 9,104.07 : x
  2. Step 2: Convert to fraction form
    18,469.16/27,712.40 = 9,104.07/x
  3. Step 3: Cross multiply
    18,469.16x = 27,712.40 × 9,104.07
  4. Step 4: Simplify right side
    18,469.16x = 252,295,583.95
  5. Step 5: Solve for x
    x = 252,295,583.95/18,469.16
  6. Step 6: Final answer
    x = 13,660.38

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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.