Home / 20,028.45-27,638.97-11,075.76

Finding the Fourth Proportional to 20,028.45, 27,638.97 and 11,075.76

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Solution

The fourth proportional to 20,028.45, 27,638.97 and 11,075.76 is: 15,284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.45 : 27,638.97 = 11,075.76 : x
  2. Step 2: Convert to fraction form
    20,028.45/27,638.97 = 11,075.76/x
  3. Step 3: Cross multiply
    20,028.45x = 27,638.97 × 11,075.76
  4. Step 4: Simplify right side
    20,028.45x = 306,122,598.37
  5. Step 5: Solve for x
    x = 306,122,598.37/20,028.45
  6. Step 6: Final answer
    x = 15,284.39

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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.