Home / 18,774.29-25,906.76-11,219.12

Finding the Fourth Proportional to 18,774.29, 25,906.76 and 11,219.12

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Solution

The fourth proportional to 18,774.29, 25,906.76 and 11,219.12 is: 15,481.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.29 : 25,906.76 = 11,219.12 : x
  2. Step 2: Convert to fraction form
    18,774.29/25,906.76 = 11,219.12/x
  3. Step 3: Cross multiply
    18,774.29x = 25,906.76 × 11,219.12
  4. Step 4: Simplify right side
    18,774.29x = 290,650,891.67
  5. Step 5: Solve for x
    x = 290,650,891.67/18,774.29
  6. Step 6: Final answer
    x = 15,481.33

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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.