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Finding the Fourth Proportional to 18,563.16, 27,849.54 and 6,879.72

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Solution

The fourth proportional to 18,563.16, 27,849.54 and 6,879.72 is: 10,321.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563.16 : 27,849.54 = 6,879.72 : x
  2. Step 2: Convert to fraction form
    18,563.16/27,849.54 = 6,879.72/x
  3. Step 3: Cross multiply
    18,563.16x = 27,849.54 × 6,879.72
  4. Step 4: Simplify right side
    18,563.16x = 191,597,037.33
  5. Step 5: Solve for x
    x = 191,597,037.33/18,563.16
  6. Step 6: Final answer
    x = 10,321.36

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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.