Home / 13,825.40-20,747.82-12,503.48

Finding the Fourth Proportional to 13,825.40, 20,747.82 and 12,503.48

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Solution

The fourth proportional to 13,825.40, 20,747.82 and 12,503.48 is: 18,764.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.40 : 20,747.82 = 12,503.48 : x
  2. Step 2: Convert to fraction form
    13,825.40/20,747.82 = 12,503.48/x
  3. Step 3: Cross multiply
    13,825.40x = 20,747.82 × 12,503.48
  4. Step 4: Simplify right side
    13,825.40x = 259,419,952.41
  5. Step 5: Solve for x
    x = 259,419,952.41/13,825.40
  6. Step 6: Final answer
    x = 18,764.01

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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.