Home / 18,195.12-25,111.44-11,122.56

Finding the Fourth Proportional to 18,195.12, 25,111.44 and 11,122.56

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Solution

The fourth proportional to 18,195.12, 25,111.44 and 11,122.56 is: 15,350.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,195.12 : 25,111.44 = 11,122.56 : x
  2. Step 2: Convert to fraction form
    18,195.12/25,111.44 = 11,122.56/x
  3. Step 3: Cross multiply
    18,195.12x = 25,111.44 × 11,122.56
  4. Step 4: Simplify right side
    18,195.12x = 279,303,498.09
  5. Step 5: Solve for x
    x = 279,303,498.09/18,195.12
  6. Step 6: Final answer
    x = 15,350.46

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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.