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Finding the Fourth Proportional to 20,555.83, 30,815.29 and 17,068.25

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Solution

The fourth proportional to 20,555.83, 30,815.29 and 17,068.25 is: 25,587.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.83 : 30,815.29 = 17,068.25 : x
  2. Step 2: Convert to fraction form
    20,555.83/30,815.29 = 17,068.25/x
  3. Step 3: Cross multiply
    20,555.83x = 30,815.29 × 17,068.25
  4. Step 4: Simplify right side
    20,555.83x = 525,963,073.54
  5. Step 5: Solve for x
    x = 525,963,073.54/20,555.83
  6. Step 6: Final answer
    x = 25,587.05

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