Home / 19,109.72-28,682.78-11,728.60

Finding the Fourth Proportional to 19,109.72, 28,682.78 and 11,728.60

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Solution

The fourth proportional to 19,109.72, 28,682.78 and 11,728.60 is: 17,604.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.72 : 28,682.78 = 11,728.60 : x
  2. Step 2: Convert to fraction form
    19,109.72/28,682.78 = 11,728.60/x
  3. Step 3: Cross multiply
    19,109.72x = 28,682.78 × 11,728.60
  4. Step 4: Simplify right side
    19,109.72x = 336,408,723.16
  5. Step 5: Solve for x
    x = 336,408,723.16/19,109.72
  6. Step 6: Final answer
    x = 17,604.06

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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.