Home / 21,206.88-29,265.44-11,775.38

Finding the Fourth Proportional to 21,206.88, 29,265.44 and 11,775.38

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Solution

The fourth proportional to 21,206.88, 29,265.44 and 11,775.38 is: 16,249.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.88 : 29,265.44 = 11,775.38 : x
  2. Step 2: Convert to fraction form
    21,206.88/29,265.44 = 11,775.38/x
  3. Step 3: Cross multiply
    21,206.88x = 29,265.44 × 11,775.38
  4. Step 4: Simplify right side
    21,206.88x = 344,611,471.66
  5. Step 5: Solve for x
    x = 344,611,471.66/21,206.88
  6. Step 6: Final answer
    x = 16,249.98

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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.