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Finding the Fourth Proportional to 18,469.15, 27,708.05 and 5,989.16

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Solution

The fourth proportional to 18,469.15, 27,708.05 and 5,989.16 is: 8,985.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.15 : 27,708.05 = 5,989.16 : x
  2. Step 2: Convert to fraction form
    18,469.15/27,708.05 = 5,989.16/x
  3. Step 3: Cross multiply
    18,469.15x = 27,708.05 × 5,989.16
  4. Step 4: Simplify right side
    18,469.15x = 165,948,028.98
  5. Step 5: Solve for x
    x = 165,948,028.98/18,469.15
  6. Step 6: Final answer
    x = 8,985.15

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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.