Home / 20,945.68-28,907.32-11,996.12

Finding the Fourth Proportional to 20,945.68, 28,907.32 and 11,996.12

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Solution

The fourth proportional to 20,945.68, 28,907.32 and 11,996.12 is: 16,555.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.68 : 28,907.32 = 11,996.12 : x
  2. Step 2: Convert to fraction form
    20,945.68/28,907.32 = 11,996.12/x
  3. Step 3: Cross multiply
    20,945.68x = 28,907.32 × 11,996.12
  4. Step 4: Simplify right side
    20,945.68x = 346,775,721.88
  5. Step 5: Solve for x
    x = 346,775,721.88/20,945.68
  6. Step 6: Final answer
    x = 16,555.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.