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Finding the Fourth Proportional to 15,832.98, 21,849.48 and 8,662.86

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Solution

The fourth proportional to 15,832.98, 21,849.48 and 8,662.86 is: 11,954.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,832.98 : 21,849.48 = 8,662.86 : x
  2. Step 2: Convert to fraction form
    15,832.98/21,849.48 = 8,662.86/x
  3. Step 3: Cross multiply
    15,832.98x = 21,849.48 × 8,662.86
  4. Step 4: Simplify right side
    15,832.98x = 189,278,986.31
  5. Step 5: Solve for x
    x = 189,278,986.31/15,832.98
  6. Step 6: Final answer
    x = 11,954.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.