Home / 21,189.88-29,242-11,629.82

Finding the Fourth Proportional to 21,189.88, 29,242 and 11,629.82

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Solution

The fourth proportional to 21,189.88, 29,242 and 11,629.82 is: 16,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.88 : 29,242 = 11,629.82 : x
  2. Step 2: Convert to fraction form
    21,189.88/29,242 = 11,629.82/x
  3. Step 3: Cross multiply
    21,189.88x = 29,242 × 11,629.82
  4. Step 4: Simplify right side
    21,189.88x = 340,079,196.44
  5. Step 5: Solve for x
    x = 340,079,196.44/21,189.88
  6. Step 6: Final answer
    x = 16,049.13

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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.