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Finding the Fourth Proportional to 18,453.72, 27,661.16 and 8,584.86

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Solution

The fourth proportional to 18,453.72, 27,661.16 and 8,584.86 is: 12,868.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.72 : 27,661.16 = 8,584.86 : x
  2. Step 2: Convert to fraction form
    18,453.72/27,661.16 = 8,584.86/x
  3. Step 3: Cross multiply
    18,453.72x = 27,661.16 × 8,584.86
  4. Step 4: Simplify right side
    18,453.72x = 237,467,186.04
  5. Step 5: Solve for x
    x = 237,467,186.04/18,453.72
  6. Step 6: Final answer
    x = 12,868.26

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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.