Home / 13,724.91-20,571.30-12,167.89

Finding the Fourth Proportional to 13,724.91, 20,571.30 and 12,167.89

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Solution

The fourth proportional to 13,724.91, 20,571.30 and 12,167.89 is: 18,237.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.91 : 20,571.30 = 12,167.89 : x
  2. Step 2: Convert to fraction form
    13,724.91/20,571.30 = 12,167.89/x
  3. Step 3: Cross multiply
    13,724.91x = 20,571.30 × 12,167.89
  4. Step 4: Simplify right side
    13,724.91x = 250,309,264.13
  5. Step 5: Solve for x
    x = 250,309,264.13/13,724.91
  6. Step 6: Final answer
    x = 18,237.59

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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.