Home / 12,198.60-18,297.90-11,965.32

Finding the Fourth Proportional to 12,198.60, 18,297.90 and 11,965.32

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Solution

The fourth proportional to 12,198.60, 18,297.90 and 11,965.32 is: 17,947.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,198.60 : 18,297.90 = 11,965.32 : x
  2. Step 2: Convert to fraction form
    12,198.60/18,297.90 = 11,965.32/x
  3. Step 3: Cross multiply
    12,198.60x = 18,297.90 × 11,965.32
  4. Step 4: Simplify right side
    12,198.60x = 218,940,228.83
  5. Step 5: Solve for x
    x = 218,940,228.83/12,198.60
  6. Step 6: Final answer
    x = 17,947.98

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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.