Home / 13,121.19-19,682.60-3,260.70

Finding the Fourth Proportional to 13,121.19, 19,682.60 and 3,260.70

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Solution

The fourth proportional to 13,121.19, 19,682.60 and 3,260.70 is: 4,891.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.19 : 19,682.60 = 3,260.70 : x
  2. Step 2: Convert to fraction form
    13,121.19/19,682.60 = 3,260.70/x
  3. Step 3: Cross multiply
    13,121.19x = 19,682.60 × 3,260.70
  4. Step 4: Simplify right side
    13,121.19x = 64,179,037.52
  5. Step 5: Solve for x
    x = 64,179,037.52/13,121.19
  6. Step 6: Final answer
    x = 4,891.25

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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.