Home / 21,694.75-29,938.78-11,758.75

Finding the Fourth Proportional to 21,694.75, 29,938.78 and 11,758.75

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Solution

The fourth proportional to 21,694.75, 29,938.78 and 11,758.75 is: 16,227.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,694.75 : 29,938.78 = 11,758.75 : x
  2. Step 2: Convert to fraction form
    21,694.75/29,938.78 = 11,758.75/x
  3. Step 3: Cross multiply
    21,694.75x = 29,938.78 × 11,758.75
  4. Step 4: Simplify right side
    21,694.75x = 352,042,570.53
  5. Step 5: Solve for x
    x = 352,042,570.53/21,694.75
  6. Step 6: Final answer
    x = 16,227.09

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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.