Home / 21,185.91-29,240.07-11,757.51

Finding the Fourth Proportional to 21,185.91, 29,240.07 and 11,757.51

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Solution

The fourth proportional to 21,185.91, 29,240.07 and 11,757.51 is: 16,227.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.91 : 29,240.07 = 11,757.51 : x
  2. Step 2: Convert to fraction form
    21,185.91/29,240.07 = 11,757.51/x
  3. Step 3: Cross multiply
    21,185.91x = 29,240.07 × 11,757.51
  4. Step 4: Simplify right side
    21,185.91x = 343,790,415.43
  5. Step 5: Solve for x
    x = 343,790,415.43/21,185.91
  6. Step 6: Final answer
    x = 16,227.31

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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.