Home / 12,806.12-19,170.30-12,378.44

Finding the Fourth Proportional to 12,806.12, 19,170.30 and 12,378.44

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Solution

The fourth proportional to 12,806.12, 19,170.30 and 12,378.44 is: 18,530.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,806.12 : 19,170.30 = 12,378.44 : x
  2. Step 2: Convert to fraction form
    12,806.12/19,170.30 = 12,378.44/x
  3. Step 3: Cross multiply
    12,806.12x = 19,170.30 × 12,378.44
  4. Step 4: Simplify right side
    12,806.12x = 237,298,408.33
  5. Step 5: Solve for x
    x = 237,298,408.33/12,806.12
  6. Step 6: Final answer
    x = 18,530.08

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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.