Home / 20,379.22-30,570.45-8,692.54

Finding the Fourth Proportional to 20,379.22, 30,570.45 and 8,692.54

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Solution

The fourth proportional to 20,379.22, 30,570.45 and 8,692.54 is: 13,039.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379.22 : 30,570.45 = 8,692.54 : x
  2. Step 2: Convert to fraction form
    20,379.22/30,570.45 = 8,692.54/x
  3. Step 3: Cross multiply
    20,379.22x = 30,570.45 × 8,692.54
  4. Step 4: Simplify right side
    20,379.22x = 265,734,859.44
  5. Step 5: Solve for x
    x = 265,734,859.44/20,379.22
  6. Step 6: Final answer
    x = 13,039.50

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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.