Home / 18,940.08-28,413.36-11,144.64

Finding the Fourth Proportional to 18,940.08, 28,413.36 and 11,144.64

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Solution

The fourth proportional to 18,940.08, 28,413.36 and 11,144.64 is: 16,718.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.08 : 28,413.36 = 11,144.64 : x
  2. Step 2: Convert to fraction form
    18,940.08/28,413.36 = 11,144.64/x
  3. Step 3: Cross multiply
    18,940.08x = 28,413.36 × 11,144.64
  4. Step 4: Simplify right side
    18,940.08x = 316,656,668.39
  5. Step 5: Solve for x
    x = 316,656,668.39/18,940.08
  6. Step 6: Final answer
    x = 16,718.87

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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.