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Finding the Fourth Proportional to 14,278.06, 19,703.28 and 7,990.48

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Solution

The fourth proportional to 14,278.06, 19,703.28 and 7,990.48 is: 11,026.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.06 : 19,703.28 = 7,990.48 : x
  2. Step 2: Convert to fraction form
    14,278.06/19,703.28 = 7,990.48/x
  3. Step 3: Cross multiply
    14,278.06x = 19,703.28 × 7,990.48
  4. Step 4: Simplify right side
    14,278.06x = 157,438,664.77
  5. Step 5: Solve for x
    x = 157,438,664.77/14,278.06
  6. Step 6: Final answer
    x = 11,026.61

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