Home / 21,461.91-32,195.93-8,131.29

Finding the Fourth Proportional to 21,461.91, 32,195.93 and 8,131.29

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Solution

The fourth proportional to 21,461.91, 32,195.93 and 8,131.29 is: 12,198.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.91 : 32,195.93 = 8,131.29 : x
  2. Step 2: Convert to fraction form
    21,461.91/32,195.93 = 8,131.29/x
  3. Step 3: Cross multiply
    21,461.91x = 32,195.93 × 8,131.29
  4. Step 4: Simplify right side
    21,461.91x = 261,794,328.00
  5. Step 5: Solve for x
    x = 261,794,328.00/21,461.91
  6. Step 6: Final answer
    x = 12,198.09

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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.