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Finding the Fourth Proportional to 18,786.44, 28,207.56 and 10,482.68

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Solution

The fourth proportional to 18,786.44, 28,207.56 and 10,482.68 is: 15,739.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.44 : 28,207.56 = 10,482.68 : x
  2. Step 2: Convert to fraction form
    18,786.44/28,207.56 = 10,482.68/x
  3. Step 3: Cross multiply
    18,786.44x = 28,207.56 × 10,482.68
  4. Step 4: Simplify right side
    18,786.44x = 295,690,825.06
  5. Step 5: Solve for x
    x = 295,690,825.06/18,786.44
  6. Step 6: Final answer
    x = 15,739.59

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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.