Home / 20,750.12-31,137.94-10,896.48

Finding the Fourth Proportional to 20,750.12, 31,137.94 and 10,896.48

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Solution

The fourth proportional to 20,750.12, 31,137.94 and 10,896.48 is: 16,351.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.12 : 31,137.94 = 10,896.48 : x
  2. Step 2: Convert to fraction form
    20,750.12/31,137.94 = 10,896.48/x
  3. Step 3: Cross multiply
    20,750.12x = 31,137.94 × 10,896.48
  4. Step 4: Simplify right side
    20,750.12x = 339,293,940.45
  5. Step 5: Solve for x
    x = 339,293,940.45/20,750.12
  6. Step 6: Final answer
    x = 16,351.42

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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.