Home / 18,786.39-28,180.40-7,100.52

Finding the Fourth Proportional to 18,786.39, 28,180.40 and 7,100.52

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Solution

The fourth proportional to 18,786.39, 28,180.40 and 7,100.52 is: 10,651.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.39 : 28,180.40 = 7,100.52 : x
  2. Step 2: Convert to fraction form
    18,786.39/28,180.40 = 7,100.52/x
  3. Step 3: Cross multiply
    18,786.39x = 28,180.40 × 7,100.52
  4. Step 4: Simplify right side
    18,786.39x = 200,095,458.31
  5. Step 5: Solve for x
    x = 200,095,458.31/18,786.39
  6. Step 6: Final answer
    x = 10,651.09

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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.