Home / 12,206.20-18,309.30-5,630.44

Finding the Fourth Proportional to 12,206.20, 18,309.30 and 5,630.44

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Solution

The fourth proportional to 12,206.20, 18,309.30 and 5,630.44 is: 8,445.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.20 : 18,309.30 = 5,630.44 : x
  2. Step 2: Convert to fraction form
    12,206.20/18,309.30 = 5,630.44/x
  3. Step 3: Cross multiply
    12,206.20x = 18,309.30 × 5,630.44
  4. Step 4: Simplify right side
    12,206.20x = 103,089,415.09
  5. Step 5: Solve for x
    x = 103,089,415.09/12,206.20
  6. Step 6: Final answer
    x = 8,445.66

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Half scale
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Similar ratio
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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.