Home / 20,190,636.20-30,285,954.30-12,128,479.40

Finding the Fourth Proportional to 20,190,636.20, 30,285,954.30 and 12,128,479.40

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Solution

The fourth proportional to 20,190,636.20, 30,285,954.30 and 12,128,479.40 is: 18,192,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190,636.20 : 30,285,954.30 = 12,128,479.40 : x
  2. Step 2: Convert to fraction form
    20,190,636.20/30,285,954.30 = 12,128,479.40/x
  3. Step 3: Cross multiply
    20,190,636.20x = 30,285,954.30 × 12,128,479.40
  4. Step 4: Simplify right side
    20,190,636.20x = 367,322,572,836,891.44
  5. Step 5: Solve for x
    x = 367,322,572,836,891.44/20,190,636.20
  6. Step 6: Final answer
    x = 18,192,719.10

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