Home / 21,651.25-32,383.05-12,745.36

Finding the Fourth Proportional to 21,651.25, 32,383.05 and 12,745.36

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Solution

The fourth proportional to 21,651.25, 32,383.05 and 12,745.36 is: 19,062.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.25 : 32,383.05 = 12,745.36 : x
  2. Step 2: Convert to fraction form
    21,651.25/32,383.05 = 12,745.36/x
  3. Step 3: Cross multiply
    21,651.25x = 32,383.05 × 12,745.36
  4. Step 4: Simplify right side
    21,651.25x = 412,733,630.15
  5. Step 5: Solve for x
    x = 412,733,630.15/21,651.25
  6. Step 6: Final answer
    x = 19,062.81

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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.