Home / 10,131.62-15,169.44-5,190.62

Finding the Fourth Proportional to 10,131.62, 15,169.44 and 5,190.62

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Solution

The fourth proportional to 10,131.62, 15,169.44 and 5,190.62 is: 7,771.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,131.62 : 15,169.44 = 5,190.62 : x
  2. Step 2: Convert to fraction form
    10,131.62/15,169.44 = 5,190.62/x
  3. Step 3: Cross multiply
    10,131.62x = 15,169.44 × 5,190.62
  4. Step 4: Simplify right side
    10,131.62x = 78,738,798.65
  5. Step 5: Solve for x
    x = 78,738,798.65/10,131.62
  6. Step 6: Final answer
    x = 7,771.59

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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.