Home / 18,778.13-28,169.62-6,940.23

Finding the Fourth Proportional to 18,778.13, 28,169.62 and 6,940.23

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Solution

The fourth proportional to 18,778.13, 28,169.62 and 6,940.23 is: 10,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.13 : 28,169.62 = 6,940.23 : x
  2. Step 2: Convert to fraction form
    18,778.13/28,169.62 = 6,940.23/x
  3. Step 3: Cross multiply
    18,778.13x = 28,169.62 × 6,940.23
  4. Step 4: Simplify right side
    18,778.13x = 195,503,716.32
  5. Step 5: Solve for x
    x = 195,503,716.32/18,778.13
  6. Step 6: Final answer
    x = 10,411.25

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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.