Home / 31,133.46-42,963.84-16,986

Finding the Fourth Proportional to 31,133.46, 42,963.84 and 16,986

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Solution

The fourth proportional to 31,133.46, 42,963.84 and 16,986 is: 23,440.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,133.46 : 42,963.84 = 16,986 : x
  2. Step 2: Convert to fraction form
    31,133.46/42,963.84 = 16,986/x
  3. Step 3: Cross multiply
    31,133.46x = 42,963.84 × 16,986
  4. Step 4: Simplify right side
    31,133.46x = 729,783,786.24
  5. Step 5: Solve for x
    x = 729,783,786.24/31,133.46
  6. Step 6: Final answer
    x = 23,440.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.