Home / 20,488.25-30,745.20-8,801.44

Finding the Fourth Proportional to 20,488.25, 30,745.20 and 8,801.44

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Solution

The fourth proportional to 20,488.25, 30,745.20 and 8,801.44 is: 13,207.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.25 : 30,745.20 = 8,801.44 : x
  2. Step 2: Convert to fraction form
    20,488.25/30,745.20 = 8,801.44/x
  3. Step 3: Cross multiply
    20,488.25x = 30,745.20 × 8,801.44
  4. Step 4: Simplify right side
    20,488.25x = 270,602,033.09
  5. Step 5: Solve for x
    x = 270,602,033.09/20,488.25
  6. Step 6: Final answer
    x = 13,207.67

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1.5x scale

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.