Home / 21,789.68-32,655.80-8,634.88

Finding the Fourth Proportional to 21,789.68, 32,655.80 and 8,634.88

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Solution

The fourth proportional to 21,789.68, 32,655.80 and 8,634.88 is: 12,940.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.68 : 32,655.80 = 8,634.88 : x
  2. Step 2: Convert to fraction form
    21,789.68/32,655.80 = 8,634.88/x
  3. Step 3: Cross multiply
    21,789.68x = 32,655.80 × 8,634.88
  4. Step 4: Simplify right side
    21,789.68x = 281,978,854.25
  5. Step 5: Solve for x
    x = 281,978,854.25/21,789.68
  6. Step 6: Final answer
    x = 12,940.93

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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.