Home / 21,635.67-32,439.56-8,489.37

Finding the Fourth Proportional to 21,635.67, 32,439.56 and 8,489.37

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Solution

The fourth proportional to 21,635.67, 32,439.56 and 8,489.37 is: 12,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635.67 : 32,439.56 = 8,489.37 : x
  2. Step 2: Convert to fraction form
    21,635.67/32,439.56 = 8,489.37/x
  3. Step 3: Cross multiply
    21,635.67x = 32,439.56 × 8,489.37
  4. Step 4: Simplify right side
    21,635.67x = 275,391,385.03
  5. Step 5: Solve for x
    x = 275,391,385.03/21,635.67
  6. Step 6: Final answer
    x = 12,728.58

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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.