Home / 18,950.21-28,413.16-7,864.55

Finding the Fourth Proportional to 18,950.21, 28,413.16 and 7,864.55

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Solution

The fourth proportional to 18,950.21, 28,413.16 and 7,864.55 is: 11,791.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.21 : 28,413.16 = 7,864.55 : x
  2. Step 2: Convert to fraction form
    18,950.21/28,413.16 = 7,864.55/x
  3. Step 3: Cross multiply
    18,950.21x = 28,413.16 × 7,864.55
  4. Step 4: Simplify right side
    18,950.21x = 223,456,717.48
  5. Step 5: Solve for x
    x = 223,456,717.48/18,950.21
  6. Step 6: Final answer
    x = 11,791.78

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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.