Home / 20,289.87-27,977.23-13,110.33

Finding the Fourth Proportional to 20,289.87, 27,977.23 and 13,110.33

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Solution

The fourth proportional to 20,289.87, 27,977.23 and 13,110.33 is: 18,077.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.87 : 27,977.23 = 13,110.33 : x
  2. Step 2: Convert to fraction form
    20,289.87/27,977.23 = 13,110.33/x
  3. Step 3: Cross multiply
    20,289.87x = 27,977.23 × 13,110.33
  4. Step 4: Simplify right side
    20,289.87x = 366,790,839.09
  5. Step 5: Solve for x
    x = 366,790,839.09/20,289.87
  6. Step 6: Final answer
    x = 18,077.54

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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.