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Finding the Fourth Proportional to 13,978,281.66, 20,968,857.17 and 5,349,640.40

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Solution

The fourth proportional to 13,978,281.66, 20,968,857.17 and 5,349,640.40 is: 8,025,009.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,978,281.66 : 20,968,857.17 = 5,349,640.40 : x
  2. Step 2: Convert to fraction form
    13,978,281.66/20,968,857.17 = 5,349,640.40/x
  3. Step 3: Cross multiply
    13,978,281.66x = 20,968,857.17 × 5,349,640.40
  4. Step 4: Simplify right side
    13,978,281.66x = 112,175,845,484,135.59
  5. Step 5: Solve for x
    x = 112,175,845,484,135.59/13,978,281.66
  6. Step 6: Final answer
    x = 8,025,009.67

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