Home / 20,858.37-28,786.96-11,907.16

Finding the Fourth Proportional to 20,858.37, 28,786.96 and 11,907.16

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Solution

The fourth proportional to 20,858.37, 28,786.96 and 11,907.16 is: 16,433.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.37 : 28,786.96 = 11,907.16 : x
  2. Step 2: Convert to fraction form
    20,858.37/28,786.96 = 11,907.16/x
  3. Step 3: Cross multiply
    20,858.37x = 28,786.96 × 11,907.16
  4. Step 4: Simplify right side
    20,858.37x = 342,770,938.63
  5. Step 5: Solve for x
    x = 342,770,938.63/20,858.37
  6. Step 6: Final answer
    x = 16,433.26

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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.