Home / 21,961.30-32,943.39-8,811.96

Finding the Fourth Proportional to 21,961.30, 32,943.39 and 8,811.96

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Solution

The fourth proportional to 21,961.30, 32,943.39 and 8,811.96 is: 13,218.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.30 : 32,943.39 = 8,811.96 : x
  2. Step 2: Convert to fraction form
    21,961.30/32,943.39 = 8,811.96/x
  3. Step 3: Cross multiply
    21,961.30x = 32,943.39 × 8,811.96
  4. Step 4: Simplify right side
    21,961.30x = 290,295,834.94
  5. Step 5: Solve for x
    x = 290,295,834.94/21,961.30
  6. Step 6: Final answer
    x = 13,218.52

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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.