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Finding the Fourth Proportional to 18,652.80, 25,736.56 and 13,619.73

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Solution

The fourth proportional to 18,652.80, 25,736.56 and 13,619.73 is: 18,792.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.80 : 25,736.56 = 13,619.73 : x
  2. Step 2: Convert to fraction form
    18,652.80/25,736.56 = 13,619.73/x
  3. Step 3: Cross multiply
    18,652.80x = 25,736.56 × 13,619.73
  4. Step 4: Simplify right side
    18,652.80x = 350,524,998.33
  5. Step 5: Solve for x
    x = 350,524,998.33/18,652.80
  6. Step 6: Final answer
    x = 18,792.08

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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.