Home / 31,128.20-46,678.26-8,936.54

Finding the Fourth Proportional to 31,128.20, 46,678.26 and 8,936.54

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Solution

The fourth proportional to 31,128.20, 46,678.26 and 8,936.54 is: 13,400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,128.20 : 46,678.26 = 8,936.54 : x
  2. Step 2: Convert to fraction form
    31,128.20/46,678.26 = 8,936.54/x
  3. Step 3: Cross multiply
    31,128.20x = 46,678.26 × 8,936.54
  4. Step 4: Simplify right side
    31,128.20x = 417,142,137.62
  5. Step 5: Solve for x
    x = 417,142,137.62/31,128.20
  6. Step 6: Final answer
    x = 13,400.78

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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.