Home / 18,824.35-25,995.18-12,121.65

Finding the Fourth Proportional to 18,824.35, 25,995.18 and 12,121.65

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Solution

The fourth proportional to 18,824.35, 25,995.18 and 12,121.65 is: 16,739.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,824.35 : 25,995.18 = 12,121.65 : x
  2. Step 2: Convert to fraction form
    18,824.35/25,995.18 = 12,121.65/x
  3. Step 3: Cross multiply
    18,824.35x = 25,995.18 × 12,121.65
  4. Step 4: Simplify right side
    18,824.35x = 315,104,413.04
  5. Step 5: Solve for x
    x = 315,104,413.04/18,824.35
  6. Step 6: Final answer
    x = 16,739.19

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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.