Home / 31,021.78-46,531.94-9,961.78

Finding the Fourth Proportional to 31,021.78, 46,531.94 and 9,961.78

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Solution

The fourth proportional to 31,021.78, 46,531.94 and 9,961.78 is: 14,942.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,021.78 : 46,531.94 = 9,961.78 : x
  2. Step 2: Convert to fraction form
    31,021.78/46,531.94 = 9,961.78/x
  3. Step 3: Cross multiply
    31,021.78x = 46,531.94 × 9,961.78
  4. Step 4: Simplify right side
    31,021.78x = 463,540,949.25
  5. Step 5: Solve for x
    x = 463,540,949.25/31,021.78
  6. Step 6: Final answer
    x = 14,942.44

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1.5x scale

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.