Home / 18,786.54-28,181.41-4,935.50

Finding the Fourth Proportional to 18,786.54, 28,181.41 and 4,935.50

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Solution

The fourth proportional to 18,786.54, 28,181.41 and 4,935.50 is: 7,403.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.54 : 28,181.41 = 4,935.50 : x
  2. Step 2: Convert to fraction form
    18,786.54/28,181.41 = 4,935.50/x
  3. Step 3: Cross multiply
    18,786.54x = 28,181.41 × 4,935.50
  4. Step 4: Simplify right side
    18,786.54x = 139,089,349.06
  5. Step 5: Solve for x
    x = 139,089,349.06/18,786.54
  6. Step 6: Final answer
    x = 7,403.67

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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.