Home / 13,751.56-20,618.70-4,986.28

Finding the Fourth Proportional to 13,751.56, 20,618.70 and 4,986.28

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Solution

The fourth proportional to 13,751.56, 20,618.70 and 4,986.28 is: 7,476.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.56 : 20,618.70 = 4,986.28 : x
  2. Step 2: Convert to fraction form
    13,751.56/20,618.70 = 4,986.28/x
  3. Step 3: Cross multiply
    13,751.56x = 20,618.70 × 4,986.28
  4. Step 4: Simplify right side
    13,751.56x = 102,810,611.44
  5. Step 5: Solve for x
    x = 102,810,611.44/13,751.56
  6. Step 6: Final answer
    x = 7,476.29

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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.