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Finding the Fourth Proportional to 21,654.56, 32,481.84 and 5,238.56

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Solution

The fourth proportional to 21,654.56, 32,481.84 and 5,238.56 is: 7,857.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,654.56 : 32,481.84 = 5,238.56 : x
  2. Step 2: Convert to fraction form
    21,654.56/32,481.84 = 5,238.56/x
  3. Step 3: Cross multiply
    21,654.56x = 32,481.84 × 5,238.56
  4. Step 4: Simplify right side
    21,654.56x = 170,158,168.60
  5. Step 5: Solve for x
    x = 170,158,168.60/21,654.56
  6. Step 6: Final answer
    x = 7,857.84

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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.