Home / 18,890.75-28,328.56-5,740.67

Finding the Fourth Proportional to 18,890.75, 28,328.56 and 5,740.67

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Solution

The fourth proportional to 18,890.75, 28,328.56 and 5,740.67 is: 8,608.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.75 : 28,328.56 = 5,740.67 : x
  2. Step 2: Convert to fraction form
    18,890.75/28,328.56 = 5,740.67/x
  3. Step 3: Cross multiply
    18,890.75x = 28,328.56 × 5,740.67
  4. Step 4: Simplify right side
    18,890.75x = 162,624,914.54
  5. Step 5: Solve for x
    x = 162,624,914.54/18,890.75
  6. Step 6: Final answer
    x = 8,608.71

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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.