Home / 20,028.75-27,638.58-11,075.73

Finding the Fourth Proportional to 20,028.75, 27,638.58 and 11,075.73

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Solution

The fourth proportional to 20,028.75, 27,638.58 and 11,075.73 is: 15,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.75 : 27,638.58 = 11,075.73 : x
  2. Step 2: Convert to fraction form
    20,028.75/27,638.58 = 11,075.73/x
  3. Step 3: Cross multiply
    20,028.75x = 27,638.58 × 11,075.73
  4. Step 4: Simplify right side
    20,028.75x = 306,117,449.66
  5. Step 5: Solve for x
    x = 306,117,449.66/20,028.75
  6. Step 6: Final answer
    x = 15,283.90

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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.