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Finding the Fourth Proportional to 18,240.74, 27,361.10 and 4,389.74

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Solution

The fourth proportional to 18,240.74, 27,361.10 and 4,389.74 is: 6,584.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.74 : 27,361.10 = 4,389.74 : x
  2. Step 2: Convert to fraction form
    18,240.74/27,361.10 = 4,389.74/x
  3. Step 3: Cross multiply
    18,240.74x = 27,361.10 × 4,389.74
  4. Step 4: Simplify right side
    18,240.74x = 120,108,115.11
  5. Step 5: Solve for x
    x = 120,108,115.11/18,240.74
  6. Step 6: Final answer
    x = 6,584.61

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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.