Home / 21,192.11-29,250.83-13,229.54

Finding the Fourth Proportional to 21,192.11, 29,250.83 and 13,229.54

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Solution

The fourth proportional to 21,192.11, 29,250.83 and 13,229.54 is: 18,260.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.11 : 29,250.83 = 13,229.54 : x
  2. Step 2: Convert to fraction form
    21,192.11/29,250.83 = 13,229.54/x
  3. Step 3: Cross multiply
    21,192.11x = 29,250.83 × 13,229.54
  4. Step 4: Simplify right side
    21,192.11x = 386,974,959.37
  5. Step 5: Solve for x
    x = 386,974,959.37/21,192.11
  6. Step 6: Final answer
    x = 18,260.33

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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.