Home / 19,144.22-28,711.15-12,113.69

Finding the Fourth Proportional to 19,144.22, 28,711.15 and 12,113.69

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Solution

The fourth proportional to 19,144.22, 28,711.15 and 12,113.69 is: 18,167.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,144.22 : 28,711.15 = 12,113.69 : x
  2. Step 2: Convert to fraction form
    19,144.22/28,711.15 = 12,113.69/x
  3. Step 3: Cross multiply
    19,144.22x = 28,711.15 × 12,113.69
  4. Step 4: Simplify right side
    19,144.22x = 347,797,796.80
  5. Step 5: Solve for x
    x = 347,797,796.80/19,144.22
  6. Step 6: Final answer
    x = 18,167.25

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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.