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Finding the Fourth Proportional to 38,561.05, 57,820.08 and 11,899.47

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Solution

The fourth proportional to 38,561.05, 57,820.08 and 11,899.47 is: 17,842.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,561.05 : 57,820.08 = 11,899.47 : x
  2. Step 2: Convert to fraction form
    38,561.05/57,820.08 = 11,899.47/x
  3. Step 3: Cross multiply
    38,561.05x = 57,820.08 × 11,899.47
  4. Step 4: Simplify right side
    38,561.05x = 688,028,307.36
  5. Step 5: Solve for x
    x = 688,028,307.36/38,561.05
  6. Step 6: Final answer
    x = 17,842.57

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