Home / 10,163.78-15,245.57-2,768.12

Finding the Fourth Proportional to 10,163.78, 15,245.57 and 2,768.12

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Solution

The fourth proportional to 10,163.78, 15,245.57 and 2,768.12 is: 4,152.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,163.78 : 15,245.57 = 2,768.12 : x
  2. Step 2: Convert to fraction form
    10,163.78/15,245.57 = 2,768.12/x
  3. Step 3: Cross multiply
    10,163.78x = 15,245.57 × 2,768.12
  4. Step 4: Simplify right side
    10,163.78x = 42,201,477.16
  5. Step 5: Solve for x
    x = 42,201,477.16/10,163.78
  6. Step 6: Final answer
    x = 4,152.15

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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.