Home / 18,195.18-25,115.99-11,485.22

Finding the Fourth Proportional to 18,195.18, 25,115.99 and 11,485.22

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Solution

The fourth proportional to 18,195.18, 25,115.99 and 11,485.22 is: 15,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,195.18 : 25,115.99 = 11,485.22 : x
  2. Step 2: Convert to fraction form
    18,195.18/25,115.99 = 11,485.22/x
  3. Step 3: Cross multiply
    18,195.18x = 25,115.99 × 11,485.22
  4. Step 4: Simplify right side
    18,195.18x = 288,462,487.66
  5. Step 5: Solve for x
    x = 288,462,487.66/18,195.18
  6. Step 6: Final answer
    x = 15,853.79

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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.