Home / 21,151.37-29,187.36-11,589.73

Finding the Fourth Proportional to 21,151.37, 29,187.36 and 11,589.73

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Solution

The fourth proportional to 21,151.37, 29,187.36 and 11,589.73 is: 15,992.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.37 : 29,187.36 = 11,589.73 : x
  2. Step 2: Convert to fraction form
    21,151.37/29,187.36 = 11,589.73/x
  3. Step 3: Cross multiply
    21,151.37x = 29,187.36 × 11,589.73
  4. Step 4: Simplify right side
    21,151.37x = 338,273,548.84
  5. Step 5: Solve for x
    x = 338,273,548.84/21,151.37
  6. Step 6: Final answer
    x = 15,992.98

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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.