Home / 12,896.37-19,344.55-8,512.80

Finding the Fourth Proportional to 12,896.37, 19,344.55 and 8,512.80

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Solution

The fourth proportional to 12,896.37, 19,344.55 and 8,512.80 is: 12,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.37 : 19,344.55 = 8,512.80 : x
  2. Step 2: Convert to fraction form
    12,896.37/19,344.55 = 8,512.80/x
  3. Step 3: Cross multiply
    12,896.37x = 19,344.55 × 8,512.80
  4. Step 4: Simplify right side
    12,896.37x = 164,676,285.24
  5. Step 5: Solve for x
    x = 164,676,285.24/12,896.37
  6. Step 6: Final answer
    x = 12,769.20

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Double scale
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Similar ratio
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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.