Home / 26,928.56-40,392.86-12,120.18

Finding the Fourth Proportional to 26,928.56, 40,392.86 and 12,120.18

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Solution

The fourth proportional to 26,928.56, 40,392.86 and 12,120.18 is: 18,180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,928.56 : 40,392.86 = 12,120.18 : x
  2. Step 2: Convert to fraction form
    26,928.56/40,392.86 = 12,120.18/x
  3. Step 3: Cross multiply
    26,928.56x = 40,392.86 × 12,120.18
  4. Step 4: Simplify right side
    26,928.56x = 489,568,673.31
  5. Step 5: Solve for x
    x = 489,568,673.31/26,928.56
  6. Step 6: Final answer
    x = 18,180.28

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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.