Home / 18,519.22-25,555.26-10,561.78

Finding the Fourth Proportional to 18,519.22, 25,555.26 and 10,561.78

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Solution

The fourth proportional to 18,519.22, 25,555.26 and 10,561.78 is: 14,574.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.22 : 25,555.26 = 10,561.78 : x
  2. Step 2: Convert to fraction form
    18,519.22/25,555.26 = 10,561.78/x
  3. Step 3: Cross multiply
    18,519.22x = 25,555.26 × 10,561.78
  4. Step 4: Simplify right side
    18,519.22x = 269,909,033.96
  5. Step 5: Solve for x
    x = 269,909,033.96/18,519.22
  6. Step 6: Final answer
    x = 14,574.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.