Home / 31,005.78-42,787.92-16,858.59

Finding the Fourth Proportional to 31,005.78, 42,787.92 and 16,858.59

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Solution

The fourth proportional to 31,005.78, 42,787.92 and 16,858.59 is: 23,264.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,005.78 : 42,787.92 = 16,858.59 : x
  2. Step 2: Convert to fraction form
    31,005.78/42,787.92 = 16,858.59/x
  3. Step 3: Cross multiply
    31,005.78x = 42,787.92 × 16,858.59
  4. Step 4: Simplify right side
    31,005.78x = 721,344,000.23
  5. Step 5: Solve for x
    x = 721,344,000.23/31,005.78
  6. Step 6: Final answer
    x = 23,264.82

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