Home / 18,759.23-28,146.62-8,223.80

Finding the Fourth Proportional to 18,759.23, 28,146.62 and 8,223.80

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Solution

The fourth proportional to 18,759.23, 28,146.62 and 8,223.80 is: 12,339.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.23 : 28,146.62 = 8,223.80 : x
  2. Step 2: Convert to fraction form
    18,759.23/28,146.62 = 8,223.80/x
  3. Step 3: Cross multiply
    18,759.23x = 28,146.62 × 8,223.80
  4. Step 4: Simplify right side
    18,759.23x = 231,472,173.56
  5. Step 5: Solve for x
    x = 231,472,173.56/18,759.23
  6. Step 6: Final answer
    x = 12,339.11

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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.