Home / 21,568.35-29,738.66-18,579.09

Finding the Fourth Proportional to 21,568.35, 29,738.66 and 18,579.09

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Solution

The fourth proportional to 21,568.35, 29,738.66 and 18,579.09 is: 25,617.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.35 : 29,738.66 = 18,579.09 : x
  2. Step 2: Convert to fraction form
    21,568.35/29,738.66 = 18,579.09/x
  3. Step 3: Cross multiply
    21,568.35x = 29,738.66 × 18,579.09
  4. Step 4: Simplify right side
    21,568.35x = 552,517,147.72
  5. Step 5: Solve for x
    x = 552,517,147.72/21,568.35
  6. Step 6: Final answer
    x = 25,617.03

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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.