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Finding the Fourth Proportional to 13,994.80, 20,985.90 and 4,130.68

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Solution

The fourth proportional to 13,994.80, 20,985.90 and 4,130.68 is: 6,194.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.80 : 20,985.90 = 4,130.68 : x
  2. Step 2: Convert to fraction form
    13,994.80/20,985.90 = 4,130.68/x
  3. Step 3: Cross multiply
    13,994.80x = 20,985.90 × 4,130.68
  4. Step 4: Simplify right side
    13,994.80x = 86,686,037.41
  5. Step 5: Solve for x
    x = 86,686,037.41/13,994.80
  6. Step 6: Final answer
    x = 6,194.16

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