Home / 18,940.56-26,137.44-11,870.88

Finding the Fourth Proportional to 18,940.56, 26,137.44 and 11,870.88

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Solution

The fourth proportional to 18,940.56, 26,137.44 and 11,870.88 is: 16,381.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.56 : 26,137.44 = 11,870.88 : x
  2. Step 2: Convert to fraction form
    18,940.56/26,137.44 = 11,870.88/x
  3. Step 3: Cross multiply
    18,940.56x = 26,137.44 × 11,870.88
  4. Step 4: Simplify right side
    18,940.56x = 310,274,413.75
  5. Step 5: Solve for x
    x = 310,274,413.75/18,940.56
  6. Step 6: Final answer
    x = 16,381.48

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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.