Home / 21,127.07-31,721.75-11,785.34

Finding the Fourth Proportional to 21,127.07, 31,721.75 and 11,785.34

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Solution

The fourth proportional to 21,127.07, 31,721.75 and 11,785.34 is: 17,695.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.07 : 31,721.75 = 11,785.34 : x
  2. Step 2: Convert to fraction form
    21,127.07/31,721.75 = 11,785.34/x
  3. Step 3: Cross multiply
    21,127.07x = 31,721.75 × 11,785.34
  4. Step 4: Simplify right side
    21,127.07x = 373,851,609.15
  5. Step 5: Solve for x
    x = 373,851,609.15/21,127.07
  6. Step 6: Final answer
    x = 17,695.38

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