Home / 21,209.88-29,270.99-11,778.44

Finding the Fourth Proportional to 21,209.88, 29,270.99 and 11,778.44

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Solution

The fourth proportional to 21,209.88, 29,270.99 and 11,778.44 is: 16,255.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.88 : 29,270.99 = 11,778.44 : x
  2. Step 2: Convert to fraction form
    21,209.88/29,270.99 = 11,778.44/x
  3. Step 3: Cross multiply
    21,209.88x = 29,270.99 × 11,778.44
  4. Step 4: Simplify right side
    21,209.88x = 344,766,540.56
  5. Step 5: Solve for x
    x = 344,766,540.56/21,209.88
  6. Step 6: Final answer
    x = 16,255.00

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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.