Home / 19,091.54-28,622.90-12,519.38

Finding the Fourth Proportional to 19,091.54, 28,622.90 and 12,519.38

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Solution

The fourth proportional to 19,091.54, 28,622.90 and 12,519.38 is: 18,769.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.54 : 28,622.90 = 12,519.38 : x
  2. Step 2: Convert to fraction form
    19,091.54/28,622.90 = 12,519.38/x
  3. Step 3: Cross multiply
    19,091.54x = 28,622.90 × 12,519.38
  4. Step 4: Simplify right side
    19,091.54x = 358,340,849.99
  5. Step 5: Solve for x
    x = 358,340,849.99/19,091.54
  6. Step 6: Final answer
    x = 18,769.62

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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.