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Finding the Fourth Proportional to 38,978.24, 58,476 and 18,190.40

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Solution

The fourth proportional to 38,978.24, 58,476 and 18,190.40 is: 27,289.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,978.24 : 58,476 = 18,190.40 : x
  2. Step 2: Convert to fraction form
    38,978.24/58,476 = 18,190.40/x
  3. Step 3: Cross multiply
    38,978.24x = 58,476 × 18,190.40
  4. Step 4: Simplify right side
    38,978.24x = 1,063,701,830.40
  5. Step 5: Solve for x
    x = 1,063,701,830.40/38,978.24
  6. Step 6: Final answer
    x = 27,289.63

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Why These Related Problems?

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