Home / 21,157.88-29,198.02-11,726.44

Finding the Fourth Proportional to 21,157.88, 29,198.02 and 11,726.44

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Solution

The fourth proportional to 21,157.88, 29,198.02 and 11,726.44 is: 16,182.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.88 : 29,198.02 = 11,726.44 : x
  2. Step 2: Convert to fraction form
    21,157.88/29,198.02 = 11,726.44/x
  3. Step 3: Cross multiply
    21,157.88x = 29,198.02 × 11,726.44
  4. Step 4: Simplify right side
    21,157.88x = 342,388,749.32
  5. Step 5: Solve for x
    x = 342,388,749.32/21,157.88
  6. Step 6: Final answer
    x = 16,182.57

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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.