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Finding the Fourth Proportional to 13,745.88, 20,619.44 and 10,009.31

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Solution

The fourth proportional to 13,745.88, 20,619.44 and 10,009.31 is: 15,014.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.88 : 20,619.44 = 10,009.31 : x
  2. Step 2: Convert to fraction form
    13,745.88/20,619.44 = 10,009.31/x
  3. Step 3: Cross multiply
    13,745.88x = 20,619.44 × 10,009.31
  4. Step 4: Simplify right side
    13,745.88x = 206,386,213.84
  5. Step 5: Solve for x
    x = 206,386,213.84/13,745.88
  6. Step 6: Final answer
    x = 15,014.41

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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.