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Finding the Fourth Proportional to 38,512, 57,768 and 13,888

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Solution

The fourth proportional to 38,512, 57,768 and 13,888 is: 20,832

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512 : 57,768 = 13,888 : x
  2. Step 2: Convert to fraction form
    38,512/57,768 = 13,888/x
  3. Step 3: Cross multiply
    38,512x = 57,768 × 13,888
  4. Step 4: Simplify right side
    38,512x = 802,281,984
  5. Step 5: Solve for x
    x = 802,281,984/38,512
  6. Step 6: Final answer
    x = 20,832

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