Home / 21,191.94-29,243.40-11,759.76

Finding the Fourth Proportional to 21,191.94, 29,243.40 and 11,759.76

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Solution

The fourth proportional to 21,191.94, 29,243.40 and 11,759.76 is: 16,227.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.94 : 29,243.40 = 11,759.76 : x
  2. Step 2: Convert to fraction form
    21,191.94/29,243.40 = 11,759.76/x
  3. Step 3: Cross multiply
    21,191.94x = 29,243.40 × 11,759.76
  4. Step 4: Simplify right side
    21,191.94x = 343,895,365.58
  5. Step 5: Solve for x
    x = 343,895,365.58/21,191.94
  6. Step 6: Final answer
    x = 16,227.65

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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.