Home / 31,228.32-46,846.80-12,756

Finding the Fourth Proportional to 31,228.32, 46,846.80 and 12,756

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Solution

The fourth proportional to 31,228.32, 46,846.80 and 12,756 is: 19,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,228.32 : 46,846.80 = 12,756 : x
  2. Step 2: Convert to fraction form
    31,228.32/46,846.80 = 12,756/x
  3. Step 3: Cross multiply
    31,228.32x = 46,846.80 × 12,756
  4. Step 4: Simplify right side
    31,228.32x = 597,577,780.80
  5. Step 5: Solve for x
    x = 597,577,780.80/31,228.32
  6. Step 6: Final answer
    x = 19,135.76

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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.