Home / 13,986.33-20,977.69-4,126.65

Finding the Fourth Proportional to 13,986.33, 20,977.69 and 4,126.65

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Solution

The fourth proportional to 13,986.33, 20,977.69 and 4,126.65 is: 6,189.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.33 : 20,977.69 = 4,126.65 : x
  2. Step 2: Convert to fraction form
    13,986.33/20,977.69 = 4,126.65/x
  3. Step 3: Cross multiply
    13,986.33x = 20,977.69 × 4,126.65
  4. Step 4: Simplify right side
    13,986.33x = 86,567,584.44
  5. Step 5: Solve for x
    x = 86,567,584.44/13,986.33
  6. Step 6: Final answer
    x = 6,189.44

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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.