Home / 20,028.52-27,638.85-11,075.80

Finding the Fourth Proportional to 20,028.52, 27,638.85 and 11,075.80

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Solution

The fourth proportional to 20,028.52, 27,638.85 and 11,075.80 is: 15,284.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.52 : 27,638.85 = 11,075.80 : x
  2. Step 2: Convert to fraction form
    20,028.52/27,638.85 = 11,075.80/x
  3. Step 3: Cross multiply
    20,028.52x = 27,638.85 × 11,075.80
  4. Step 4: Simplify right side
    20,028.52x = 306,122,374.83
  5. Step 5: Solve for x
    x = 306,122,374.83/20,028.52
  6. Step 6: Final answer
    x = 15,284.32

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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.