Home / 21,512.78-29,687.82-12,082.22

Finding the Fourth Proportional to 21,512.78, 29,687.82 and 12,082.22

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Solution

The fourth proportional to 21,512.78, 29,687.82 and 12,082.22 is: 16,673.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.78 : 29,687.82 = 12,082.22 : x
  2. Step 2: Convert to fraction form
    21,512.78/29,687.82 = 12,082.22/x
  3. Step 3: Cross multiply
    21,512.78x = 29,687.82 × 12,082.22
  4. Step 4: Simplify right side
    21,512.78x = 358,694,772.56
  5. Step 5: Solve for x
    x = 358,694,772.56/21,512.78
  6. Step 6: Final answer
    x = 16,673.57

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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.