Home / 21,190.09-29,243.70-11,758.66

Finding the Fourth Proportional to 21,190.09, 29,243.70 and 11,758.66

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Solution

The fourth proportional to 21,190.09, 29,243.70 and 11,758.66 is: 16,227.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.09 : 29,243.70 = 11,758.66 : x
  2. Step 2: Convert to fraction form
    21,190.09/29,243.70 = 11,758.66/x
  3. Step 3: Cross multiply
    21,190.09x = 29,243.70 × 11,758.66
  4. Step 4: Simplify right side
    21,190.09x = 343,866,725.44
  5. Step 5: Solve for x
    x = 343,866,725.44/21,190.09
  6. Step 6: Final answer
    x = 16,227.71

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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.