Home / 21,218.22-29,280.96-11,786.58

Finding the Fourth Proportional to 21,218.22, 29,280.96 and 11,786.58

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Solution

The fourth proportional to 21,218.22, 29,280.96 and 11,786.58 is: 16,265.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.22 : 29,280.96 = 11,786.58 : x
  2. Step 2: Convert to fraction form
    21,218.22/29,280.96 = 11,786.58/x
  3. Step 3: Cross multiply
    21,218.22x = 29,280.96 × 11,786.58
  4. Step 4: Simplify right side
    21,218.22x = 345,122,377.52
  5. Step 5: Solve for x
    x = 345,122,377.52/21,218.22
  6. Step 6: Final answer
    x = 16,265.38

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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.