Home / 19,091.28-28,638.90-6,611.28

Finding the Fourth Proportional to 19,091.28, 28,638.90 and 6,611.28

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Solution

The fourth proportional to 19,091.28, 28,638.90 and 6,611.28 is: 9,917.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.28 : 28,638.90 = 6,611.28 : x
  2. Step 2: Convert to fraction form
    19,091.28/28,638.90 = 6,611.28/x
  3. Step 3: Cross multiply
    19,091.28x = 28,638.90 × 6,611.28
  4. Step 4: Simplify right side
    19,091.28x = 189,339,786.79
  5. Step 5: Solve for x
    x = 189,339,786.79/19,091.28
  6. Step 6: Final answer
    x = 9,917.61

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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.