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Finding the Fourth Proportional to 37,406.81, 51,621.40 and 20,639.81

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Solution

The fourth proportional to 37,406.81, 51,621.40 and 20,639.81 is: 28,482.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,406.81 : 51,621.40 = 20,639.81 : x
  2. Step 2: Convert to fraction form
    37,406.81/51,621.40 = 20,639.81/x
  3. Step 3: Cross multiply
    37,406.81x = 51,621.40 × 20,639.81
  4. Step 4: Simplify right side
    37,406.81x = 1,065,456,042.79
  5. Step 5: Solve for x
    x = 1,065,456,042.79/37,406.81
  6. Step 6: Final answer
    x = 28,482.94

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