Home / 21,157.88-29,198.94-11,726.24

Finding the Fourth Proportional to 21,157.88, 29,198.94 and 11,726.24

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Solution

The fourth proportional to 21,157.88, 29,198.94 and 11,726.24 is: 16,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.88 : 29,198.94 = 11,726.24 : x
  2. Step 2: Convert to fraction form
    21,157.88/29,198.94 = 11,726.24/x
  3. Step 3: Cross multiply
    21,157.88x = 29,198.94 × 11,726.24
  4. Step 4: Simplify right side
    21,157.88x = 342,393,778.19
  5. Step 5: Solve for x
    x = 342,393,778.19/21,157.88
  6. Step 6: Final answer
    x = 16,182.80

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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.