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Finding the Fourth Proportional to 21,659.44, 32,475.96 and 8,518

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Solution

The fourth proportional to 21,659.44, 32,475.96 and 8,518 is: 12,771.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,659.44 : 32,475.96 = 8,518 : x
  2. Step 2: Convert to fraction form
    21,659.44/32,475.96 = 8,518/x
  3. Step 3: Cross multiply
    21,659.44x = 32,475.96 × 8,518
  4. Step 4: Simplify right side
    21,659.44x = 276,630,227.28
  5. Step 5: Solve for x
    x = 276,630,227.28/21,659.44
  6. Step 6: Final answer
    x = 12,771.81

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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.