Home / 20,858.01-28,786.79-11,907.26

Finding the Fourth Proportional to 20,858.01, 28,786.79 and 11,907.26

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Solution

The fourth proportional to 20,858.01, 28,786.79 and 11,907.26 is: 16,433.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.01 : 28,786.79 = 11,907.26 : x
  2. Step 2: Convert to fraction form
    20,858.01/28,786.79 = 11,907.26/x
  3. Step 3: Cross multiply
    20,858.01x = 28,786.79 × 11,907.26
  4. Step 4: Simplify right side
    20,858.01x = 342,771,589.63
  5. Step 5: Solve for x
    x = 342,771,589.63/20,858.01
  6. Step 6: Final answer
    x = 16,433.57

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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.