Home / 18,619.53-27,938.40-8,759.79

Finding the Fourth Proportional to 18,619.53, 27,938.40 and 8,759.79

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Solution

The fourth proportional to 18,619.53, 27,938.40 and 8,759.79 is: 13,143.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.53 : 27,938.40 = 8,759.79 : x
  2. Step 2: Convert to fraction form
    18,619.53/27,938.40 = 8,759.79/x
  3. Step 3: Cross multiply
    18,619.53x = 27,938.40 × 8,759.79
  4. Step 4: Simplify right side
    18,619.53x = 244,734,516.94
  5. Step 5: Solve for x
    x = 244,734,516.94/18,619.53
  6. Step 6: Final answer
    x = 13,143.97

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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.