Home / 10,115.37-15,174.68-3,188.25

Finding the Fourth Proportional to 10,115.37, 15,174.68 and 3,188.25

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Solution

The fourth proportional to 10,115.37, 15,174.68 and 3,188.25 is: 4,782.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.37 : 15,174.68 = 3,188.25 : x
  2. Step 2: Convert to fraction form
    10,115.37/15,174.68 = 3,188.25/x
  3. Step 3: Cross multiply
    10,115.37x = 15,174.68 × 3,188.25
  4. Step 4: Simplify right side
    10,115.37x = 48,380,657.57
  5. Step 5: Solve for x
    x = 48,380,657.57/10,115.37
  6. Step 6: Final answer
    x = 4,782.89

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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.