Home / 12,185.06-16,815.71-6,879.92

Finding the Fourth Proportional to 12,185.06, 16,815.71 and 6,879.92

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Solution

The fourth proportional to 12,185.06, 16,815.71 and 6,879.92 is: 9,494.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.06 : 16,815.71 = 6,879.92 : x
  2. Step 2: Convert to fraction form
    12,185.06/16,815.71 = 6,879.92/x
  3. Step 3: Cross multiply
    12,185.06x = 16,815.71 × 6,879.92
  4. Step 4: Simplify right side
    12,185.06x = 115,690,705.14
  5. Step 5: Solve for x
    x = 115,690,705.14/12,185.06
  6. Step 6: Final answer
    x = 9,494.47

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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.