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Finding the Fourth Proportional to 19,855.93, 29,784.61 and 9,989.84

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Solution

The fourth proportional to 19,855.93, 29,784.61 and 9,989.84 is: 14,985.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.93 : 29,784.61 = 9,989.84 : x
  2. Step 2: Convert to fraction form
    19,855.93/29,784.61 = 9,989.84/x
  3. Step 3: Cross multiply
    19,855.93x = 29,784.61 × 9,989.84
  4. Step 4: Simplify right side
    19,855.93x = 297,543,488.36
  5. Step 5: Solve for x
    x = 297,543,488.36/19,855.93
  6. Step 6: Final answer
    x = 14,985.12

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