Home / 21,105.75-29,126.45-11,546.54

Finding the Fourth Proportional to 21,105.75, 29,126.45 and 11,546.54

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Solution

The fourth proportional to 21,105.75, 29,126.45 and 11,546.54 is: 15,934.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105.75 : 29,126.45 = 11,546.54 : x
  2. Step 2: Convert to fraction form
    21,105.75/29,126.45 = 11,546.54/x
  3. Step 3: Cross multiply
    21,105.75x = 29,126.45 × 11,546.54
  4. Step 4: Simplify right side
    21,105.75x = 336,309,719.98
  5. Step 5: Solve for x
    x = 336,309,719.98/21,105.75
  6. Step 6: Final answer
    x = 15,934.51

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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.