Home / 18,723.89-28,078.07-7,623.04

Finding the Fourth Proportional to 18,723.89, 28,078.07 and 7,623.04

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Solution

The fourth proportional to 18,723.89, 28,078.07 and 7,623.04 is: 11,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.89 : 28,078.07 = 7,623.04 : x
  2. Step 2: Convert to fraction form
    18,723.89/28,078.07 = 7,623.04/x
  3. Step 3: Cross multiply
    18,723.89x = 28,078.07 × 7,623.04
  4. Step 4: Simplify right side
    18,723.89x = 214,040,250.73
  5. Step 5: Solve for x
    x = 214,040,250.73/18,723.89
  6. Step 6: Final answer
    x = 11,431.40

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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.