Home / 21,818.82-30,105.32-15,093.66

Finding the Fourth Proportional to 21,818.82, 30,105.32 and 15,093.66

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Solution

The fourth proportional to 21,818.82, 30,105.32 and 15,093.66 is: 20,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.82 : 30,105.32 = 15,093.66 : x
  2. Step 2: Convert to fraction form
    21,818.82/30,105.32 = 15,093.66/x
  3. Step 3: Cross multiply
    21,818.82x = 30,105.32 × 15,093.66
  4. Step 4: Simplify right side
    21,818.82x = 454,399,464.27
  5. Step 5: Solve for x
    x = 454,399,464.27/21,818.82
  6. Step 6: Final answer
    x = 20,826.03

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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.