Home / 21,338.88-29,447.56-11,907.44

Finding the Fourth Proportional to 21,338.88, 29,447.56 and 11,907.44

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Solution

The fourth proportional to 21,338.88, 29,447.56 and 11,907.44 is: 16,432.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.88 : 29,447.56 = 11,907.44 : x
  2. Step 2: Convert to fraction form
    21,338.88/29,447.56 = 11,907.44/x
  3. Step 3: Cross multiply
    21,338.88x = 29,447.56 × 11,907.44
  4. Step 4: Simplify right side
    21,338.88x = 350,645,053.85
  5. Step 5: Solve for x
    x = 350,645,053.85/21,338.88
  6. Step 6: Final answer
    x = 16,432.21

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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.