Home / 13,939.56-20,907.72-5,619.24

Finding the Fourth Proportional to 13,939.56, 20,907.72 and 5,619.24

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Solution

The fourth proportional to 13,939.56, 20,907.72 and 5,619.24 is: 8,428.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.56 : 20,907.72 = 5,619.24 : x
  2. Step 2: Convert to fraction form
    13,939.56/20,907.72 = 5,619.24/x
  3. Step 3: Cross multiply
    13,939.56x = 20,907.72 × 5,619.24
  4. Step 4: Simplify right side
    13,939.56x = 117,485,496.53
  5. Step 5: Solve for x
    x = 117,485,496.53/13,939.56
  6. Step 6: Final answer
    x = 8,428.21

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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.