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Finding the Fourth Proportional to 13,487,978.30, 20,231,967.45 and 11,929,084.70

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Solution

The fourth proportional to 13,487,978.30, 20,231,967.45 and 11,929,084.70 is: 17,893,627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487,978.30 : 20,231,967.45 = 11,929,084.70 : x
  2. Step 2: Convert to fraction form
    13,487,978.30/20,231,967.45 = 11,929,084.70/x
  3. Step 3: Cross multiply
    13,487,978.30x = 20,231,967.45 × 11,929,084.70
  4. Step 4: Simplify right side
    13,487,978.30x = 241,348,853,358,693
  5. Step 5: Solve for x
    x = 241,348,853,358,693/13,487,978.30
  6. Step 6: Final answer
    x = 17,893,627.05

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