Home / 28,189.14-42,286.20-7,412.64

Finding the Fourth Proportional to 28,189.14, 42,286.20 and 7,412.64

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Solution

The fourth proportional to 28,189.14, 42,286.20 and 7,412.64 is: 11,119.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.14 : 42,286.20 = 7,412.64 : x
  2. Step 2: Convert to fraction form
    28,189.14/42,286.20 = 7,412.64/x
  3. Step 3: Cross multiply
    28,189.14x = 42,286.20 × 7,412.64
  4. Step 4: Simplify right side
    28,189.14x = 313,452,377.57
  5. Step 5: Solve for x
    x = 313,452,377.57/28,189.14
  6. Step 6: Final answer
    x = 11,119.61

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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.