Home / 13,286.80-19,946.40-13,189.60

Finding the Fourth Proportional to 13,286.80, 19,946.40 and 13,189.60

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Solution

The fourth proportional to 13,286.80, 19,946.40 and 13,189.60 is: 19,800.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.80 : 19,946.40 = 13,189.60 : x
  2. Step 2: Convert to fraction form
    13,286.80/19,946.40 = 13,189.60/x
  3. Step 3: Cross multiply
    13,286.80x = 19,946.40 × 13,189.60
  4. Step 4: Simplify right side
    13,286.80x = 263,085,037.44
  5. Step 5: Solve for x
    x = 263,085,037.44/13,286.80
  6. Step 6: Final answer
    x = 19,800.48

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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.