Home / 21,217.26-29,279-11,786.42

Finding the Fourth Proportional to 21,217.26, 29,279 and 11,786.42

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Solution

The fourth proportional to 21,217.26, 29,279 and 11,786.42 is: 16,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.26 : 29,279 = 11,786.42 : x
  2. Step 2: Convert to fraction form
    21,217.26/29,279 = 11,786.42/x
  3. Step 3: Cross multiply
    21,217.26x = 29,279 × 11,786.42
  4. Step 4: Simplify right side
    21,217.26x = 345,094,591.18
  5. Step 5: Solve for x
    x = 345,094,591.18/21,217.26
  6. Step 6: Final answer
    x = 16,264.80

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1.5x scale

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.