Home / 20,021.98-27,629.79-11,069.86

Finding the Fourth Proportional to 20,021.98, 27,629.79 and 11,069.86

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Solution

The fourth proportional to 20,021.98, 27,629.79 and 11,069.86 is: 15,276.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.98 : 27,629.79 = 11,069.86 : x
  2. Step 2: Convert to fraction form
    20,021.98/27,629.79 = 11,069.86/x
  3. Step 3: Cross multiply
    20,021.98x = 27,629.79 × 11,069.86
  4. Step 4: Simplify right side
    20,021.98x = 305,857,907.13
  5. Step 5: Solve for x
    x = 305,857,907.13/20,021.98
  6. Step 6: Final answer
    x = 15,276.11

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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.