Home / 18,990.27-26,202.57-11,028.39

Finding the Fourth Proportional to 18,990.27, 26,202.57 and 11,028.39

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Solution

The fourth proportional to 18,990.27, 26,202.57 and 11,028.39 is: 15,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.27 : 26,202.57 = 11,028.39 : x
  2. Step 2: Convert to fraction form
    18,990.27/26,202.57 = 11,028.39/x
  3. Step 3: Cross multiply
    18,990.27x = 26,202.57 × 11,028.39
  4. Step 4: Simplify right side
    18,990.27x = 288,972,160.96
  5. Step 5: Solve for x
    x = 288,972,160.96/18,990.27
  6. Step 6: Final answer
    x = 15,216.85

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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.