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Finding the Fourth Proportional to 25,608.20, 38,436.60 and 21,914.60

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Solution

The fourth proportional to 25,608.20, 38,436.60 and 21,914.60 is: 32,892.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,608.20 : 38,436.60 = 21,914.60 : x
  2. Step 2: Convert to fraction form
    25,608.20/38,436.60 = 21,914.60/x
  3. Step 3: Cross multiply
    25,608.20x = 38,436.60 × 21,914.60
  4. Step 4: Simplify right side
    25,608.20x = 842,322,714.36
  5. Step 5: Solve for x
    x = 842,322,714.36/25,608.20
  6. Step 6: Final answer
    x = 32,892.70

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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.