Home / 13,905.68-19,183.41-12,313.95

Finding the Fourth Proportional to 13,905.68, 19,183.41 and 12,313.95

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Solution

The fourth proportional to 13,905.68, 19,183.41 and 12,313.95 is: 16,987.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.68 : 19,183.41 = 12,313.95 : x
  2. Step 2: Convert to fraction form
    13,905.68/19,183.41 = 12,313.95/x
  3. Step 3: Cross multiply
    13,905.68x = 19,183.41 × 12,313.95
  4. Step 4: Simplify right side
    13,905.68x = 236,223,498.95
  5. Step 5: Solve for x
    x = 236,223,498.95/13,905.68
  6. Step 6: Final answer
    x = 16,987.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.