Home / 12,768.58-19,120.74-8,074.36

Finding the Fourth Proportional to 12,768.58, 19,120.74 and 8,074.36

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Solution

The fourth proportional to 12,768.58, 19,120.74 and 8,074.36 is: 12,091.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.58 : 19,120.74 = 8,074.36 : x
  2. Step 2: Convert to fraction form
    12,768.58/19,120.74 = 8,074.36/x
  3. Step 3: Cross multiply
    12,768.58x = 19,120.74 × 8,074.36
  4. Step 4: Simplify right side
    12,768.58x = 154,387,738.23
  5. Step 5: Solve for x
    x = 154,387,738.23/12,768.58
  6. Step 6: Final answer
    x = 12,091.22

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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.