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Finding the Fourth Proportional to 14,289.83, 21,448.55 and 6,899.48

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Solution

The fourth proportional to 14,289.83, 21,448.55 and 6,899.48 is: 10,355.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.83 : 21,448.55 = 6,899.48 : x
  2. Step 2: Convert to fraction form
    14,289.83/21,448.55 = 6,899.48/x
  3. Step 3: Cross multiply
    14,289.83x = 21,448.55 × 6,899.48
  4. Step 4: Simplify right side
    14,289.83x = 147,983,841.75
  5. Step 5: Solve for x
    x = 147,983,841.75/14,289.83
  6. Step 6: Final answer
    x = 10,355.89

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