Home / 12,890.52-19,338.84-9,183.60

Finding the Fourth Proportional to 12,890.52, 19,338.84 and 9,183.60

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Solution

The fourth proportional to 12,890.52, 19,338.84 and 9,183.60 is: 13,777.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.52 : 19,338.84 = 9,183.60 : x
  2. Step 2: Convert to fraction form
    12,890.52/19,338.84 = 9,183.60/x
  3. Step 3: Cross multiply
    12,890.52x = 19,338.84 × 9,183.60
  4. Step 4: Simplify right side
    12,890.52x = 177,600,171.02
  5. Step 5: Solve for x
    x = 177,600,171.02/12,890.52
  6. Step 6: Final answer
    x = 13,777.58

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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.