Home / 21,571.26-29,769.30-12,140.43

Finding the Fourth Proportional to 21,571.26, 29,769.30 and 12,140.43

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Solution

The fourth proportional to 21,571.26, 29,769.30 and 12,140.43 is: 16,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.26 : 29,769.30 = 12,140.43 : x
  2. Step 2: Convert to fraction form
    21,571.26/29,769.30 = 12,140.43/x
  3. Step 3: Cross multiply
    21,571.26x = 29,769.30 × 12,140.43
  4. Step 4: Simplify right side
    21,571.26x = 361,412,102.80
  5. Step 5: Solve for x
    x = 361,412,102.80/21,571.26
  6. Step 6: Final answer
    x = 16,754.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.