Home / 12,074.20-18,111.30-8,137.60

Finding the Fourth Proportional to 12,074.20, 18,111.30 and 8,137.60

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Solution

The fourth proportional to 12,074.20, 18,111.30 and 8,137.60 is: 12,206.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,074.20 : 18,111.30 = 8,137.60 : x
  2. Step 2: Convert to fraction form
    12,074.20/18,111.30 = 8,137.60/x
  3. Step 3: Cross multiply
    12,074.20x = 18,111.30 × 8,137.60
  4. Step 4: Simplify right side
    12,074.20x = 147,382,514.88
  5. Step 5: Solve for x
    x = 147,382,514.88/12,074.20
  6. Step 6: Final answer
    x = 12,206.40

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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.