Home / 21,211.88-29,273.30-11,780.44

Finding the Fourth Proportional to 21,211.88, 29,273.30 and 11,780.44

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Solution

The fourth proportional to 21,211.88, 29,273.30 and 11,780.44 is: 16,257.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.88 : 29,273.30 = 11,780.44 : x
  2. Step 2: Convert to fraction form
    21,211.88/29,273.30 = 11,780.44/x
  3. Step 3: Cross multiply
    21,211.88x = 29,273.30 × 11,780.44
  4. Step 4: Simplify right side
    21,211.88x = 344,852,266.34
  5. Step 5: Solve for x
    x = 344,852,266.34/21,211.88
  6. Step 6: Final answer
    x = 16,257.51

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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.