Home / 31,102.20-46,653.30-18,660.60

Finding the Fourth Proportional to 31,102.20, 46,653.30 and 18,660.60

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Solution

The fourth proportional to 31,102.20, 46,653.30 and 18,660.60 is: 27,990.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,102.20 : 46,653.30 = 18,660.60 : x
  2. Step 2: Convert to fraction form
    31,102.20/46,653.30 = 18,660.60/x
  3. Step 3: Cross multiply
    31,102.20x = 46,653.30 × 18,660.60
  4. Step 4: Simplify right side
    31,102.20x = 870,578,569.98
  5. Step 5: Solve for x
    x = 870,578,569.98/31,102.20
  6. Step 6: Final answer
    x = 27,990.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.