Home / 18,518.81-27,759.78-11,949.62

Finding the Fourth Proportional to 18,518.81, 27,759.78 and 11,949.62

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Solution

The fourth proportional to 18,518.81, 27,759.78 and 11,949.62 is: 17,912.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.81 : 27,759.78 = 11,949.62 : x
  2. Step 2: Convert to fraction form
    18,518.81/27,759.78 = 11,949.62/x
  3. Step 3: Cross multiply
    18,518.81x = 27,759.78 × 11,949.62
  4. Step 4: Simplify right side
    18,518.81x = 331,718,683.48
  5. Step 5: Solve for x
    x = 331,718,683.48/18,518.81
  6. Step 6: Final answer
    x = 17,912.53

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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.