Home / 13,938.80-20,906.08-4,075.44

Finding the Fourth Proportional to 13,938.80, 20,906.08 and 4,075.44

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Solution

The fourth proportional to 13,938.80, 20,906.08 and 4,075.44 is: 6,112.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.80 : 20,906.08 = 4,075.44 : x
  2. Step 2: Convert to fraction form
    13,938.80/20,906.08 = 4,075.44/x
  3. Step 3: Cross multiply
    13,938.80x = 20,906.08 × 4,075.44
  4. Step 4: Simplify right side
    13,938.80x = 85,201,474.68
  5. Step 5: Solve for x
    x = 85,201,474.68/13,938.80
  6. Step 6: Final answer
    x = 6,112.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.