Home / 18,518.78-25,558.44-10,964.54

Finding the Fourth Proportional to 18,518.78, 25,558.44 and 10,964.54

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Solution

The fourth proportional to 18,518.78, 25,558.44 and 10,964.54 is: 15,132.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.78 : 25,558.44 = 10,964.54 : x
  2. Step 2: Convert to fraction form
    18,518.78/25,558.44 = 10,964.54/x
  3. Step 3: Cross multiply
    18,518.78x = 25,558.44 × 10,964.54
  4. Step 4: Simplify right side
    18,518.78x = 280,236,537.72
  5. Step 5: Solve for x
    x = 280,236,537.72/18,518.78
  6. Step 6: Final answer
    x = 15,132.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.