Home / 18,938.25-28,413.27-7,850.16

Finding the Fourth Proportional to 18,938.25, 28,413.27 and 7,850.16

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Solution

The fourth proportional to 18,938.25, 28,413.27 and 7,850.16 is: 11,777.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.25 : 28,413.27 = 7,850.16 : x
  2. Step 2: Convert to fraction form
    18,938.25/28,413.27 = 7,850.16/x
  3. Step 3: Cross multiply
    18,938.25x = 28,413.27 × 7,850.16
  4. Step 4: Simplify right side
    18,938.25x = 223,048,715.62
  5. Step 5: Solve for x
    x = 223,048,715.62/18,938.25
  6. Step 6: Final answer
    x = 11,777.68

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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.