Home / 18,724.26-28,078.60-7,623.42

Finding the Fourth Proportional to 18,724.26, 28,078.60 and 7,623.42

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Solution

The fourth proportional to 18,724.26, 28,078.60 and 7,623.42 is: 11,431.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.26 : 28,078.60 = 7,623.42 : x
  2. Step 2: Convert to fraction form
    18,724.26/28,078.60 = 7,623.42/x
  3. Step 3: Cross multiply
    18,724.26x = 28,078.60 × 7,623.42
  4. Step 4: Simplify right side
    18,724.26x = 214,054,960.81
  5. Step 5: Solve for x
    x = 214,054,960.81/18,724.26
  6. Step 6: Final answer
    x = 11,431.96

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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.