Home / 21,190.72-29,243.10-11,759.26

Finding the Fourth Proportional to 21,190.72, 29,243.10 and 11,759.26

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Solution

The fourth proportional to 21,190.72, 29,243.10 and 11,759.26 is: 16,227.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.72 : 29,243.10 = 11,759.26 : x
  2. Step 2: Convert to fraction form
    21,190.72/29,243.10 = 11,759.26/x
  3. Step 3: Cross multiply
    21,190.72x = 29,243.10 × 11,759.26
  4. Step 4: Simplify right side
    21,190.72x = 343,877,216.11
  5. Step 5: Solve for x
    x = 343,877,216.11/21,190.72
  6. Step 6: Final answer
    x = 16,227.73

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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.