Home / 18,981,078.64-28,517,039.42-12,170,994.32

Finding the Fourth Proportional to 18,981,078.64, 28,517,039.42 and 12,170,994.32

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Solution

The fourth proportional to 18,981,078.64, 28,517,039.42 and 12,170,994.32 is: 18,285,616.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,078.64 : 28,517,039.42 = 12,170,994.32 : x
  2. Step 2: Convert to fraction form
    18,981,078.64/28,517,039.42 = 12,170,994.32/x
  3. Step 3: Cross multiply
    18,981,078.64x = 28,517,039.42 × 12,170,994.32
  4. Step 4: Simplify right side
    18,981,078.64x = 347,080,724,804,036.12
  5. Step 5: Solve for x
    x = 347,080,724,804,036.12/18,981,078.64
  6. Step 6: Final answer
    x = 18,285,616.50

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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.