Home / 18,413.98-25,406.87-10,859.70

Finding the Fourth Proportional to 18,413.98, 25,406.87 and 10,859.70

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Solution

The fourth proportional to 18,413.98, 25,406.87 and 10,859.70 is: 14,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.98 : 25,406.87 = 10,859.70 : x
  2. Step 2: Convert to fraction form
    18,413.98/25,406.87 = 10,859.70/x
  3. Step 3: Cross multiply
    18,413.98x = 25,406.87 × 10,859.70
  4. Step 4: Simplify right side
    18,413.98x = 275,910,986.14
  5. Step 5: Solve for x
    x = 275,910,986.14/18,413.98
  6. Step 6: Final answer
    x = 14,983.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.