Home / 18,618.32-25,690.20-11,069.12

Finding the Fourth Proportional to 18,618.32, 25,690.20 and 11,069.12

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Solution

The fourth proportional to 18,618.32, 25,690.20 and 11,069.12 is: 15,273.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.32 : 25,690.20 = 11,069.12 : x
  2. Step 2: Convert to fraction form
    18,618.32/25,690.20 = 11,069.12/x
  3. Step 3: Cross multiply
    18,618.32x = 25,690.20 × 11,069.12
  4. Step 4: Simplify right side
    18,618.32x = 284,367,906.62
  5. Step 5: Solve for x
    x = 284,367,906.62/18,618.32
  6. Step 6: Final answer
    x = 15,273.55

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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.