Home / 13,578.44-18,747.42-8,799.80

Finding the Fourth Proportional to 13,578.44, 18,747.42 and 8,799.80

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Solution

The fourth proportional to 13,578.44, 18,747.42 and 8,799.80 is: 12,149.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.44 : 18,747.42 = 8,799.80 : x
  2. Step 2: Convert to fraction form
    13,578.44/18,747.42 = 8,799.80/x
  3. Step 3: Cross multiply
    13,578.44x = 18,747.42 × 8,799.80
  4. Step 4: Simplify right side
    13,578.44x = 164,973,546.52
  5. Step 5: Solve for x
    x = 164,973,546.52/13,578.44
  6. Step 6: Final answer
    x = 12,149.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.