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Finding the Fourth Proportional to 18,782.82, 25,954.83 and 13,469.22

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Solution

The fourth proportional to 18,782.82, 25,954.83 and 13,469.22 is: 18,612.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.82 : 25,954.83 = 13,469.22 : x
  2. Step 2: Convert to fraction form
    18,782.82/25,954.83 = 13,469.22/x
  3. Step 3: Cross multiply
    18,782.82x = 25,954.83 × 13,469.22
  4. Step 4: Simplify right side
    18,782.82x = 349,591,315.33
  5. Step 5: Solve for x
    x = 349,591,315.33/18,782.82
  6. Step 6: Final answer
    x = 18,612.29

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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.