Home / 26,928.63-40,361.31-12,120.21

Finding the Fourth Proportional to 26,928.63, 40,361.31 and 12,120.21

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Solution

The fourth proportional to 26,928.63, 40,361.31 and 12,120.21 is: 18,166.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,928.63 : 40,361.31 = 12,120.21 : x
  2. Step 2: Convert to fraction form
    26,928.63/40,361.31 = 12,120.21/x
  3. Step 3: Cross multiply
    26,928.63x = 40,361.31 × 12,120.21
  4. Step 4: Simplify right side
    26,928.63x = 489,187,553.08
  5. Step 5: Solve for x
    x = 489,187,553.08/26,928.63
  6. Step 6: Final answer
    x = 18,166.08

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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.