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Finding the Fourth Proportional to 21,592.63, 32,392.64 and 9,906.85

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Solution

The fourth proportional to 21,592.63, 32,392.64 and 9,906.85 is: 14,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,592.63 : 32,392.64 = 9,906.85 : x
  2. Step 2: Convert to fraction form
    21,592.63/32,392.64 = 9,906.85/x
  3. Step 3: Cross multiply
    21,592.63x = 32,392.64 × 9,906.85
  4. Step 4: Simplify right side
    21,592.63x = 320,909,025.58
  5. Step 5: Solve for x
    x = 320,909,025.58/21,592.63
  6. Step 6: Final answer
    x = 14,861.97

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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.