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Finding the Fourth Proportional to 18,645.21, 27,961.16 and 6,162.93

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Solution

The fourth proportional to 18,645.21, 27,961.16 and 6,162.93 is: 9,242.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.21 : 27,961.16 = 6,162.93 : x
  2. Step 2: Convert to fraction form
    18,645.21/27,961.16 = 6,162.93/x
  3. Step 3: Cross multiply
    18,645.21x = 27,961.16 × 6,162.93
  4. Step 4: Simplify right side
    18,645.21x = 172,322,640.98
  5. Step 5: Solve for x
    x = 172,322,640.98/18,645.21
  6. Step 6: Final answer
    x = 9,242.19

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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.