Home / 18,515.89-27,724.42-11,110.20

Finding the Fourth Proportional to 18,515.89, 27,724.42 and 11,110.20

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Solution

The fourth proportional to 18,515.89, 27,724.42 and 11,110.20 is: 16,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.89 : 27,724.42 = 11,110.20 : x
  2. Step 2: Convert to fraction form
    18,515.89/27,724.42 = 11,110.20/x
  3. Step 3: Cross multiply
    18,515.89x = 27,724.42 × 11,110.20
  4. Step 4: Simplify right side
    18,515.89x = 308,023,851.08
  5. Step 5: Solve for x
    x = 308,023,851.08/18,515.89
  6. Step 6: Final answer
    x = 16,635.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.