Home / 19,231.11-28,839.63-8,138.67

Finding the Fourth Proportional to 19,231.11, 28,839.63 and 8,138.67

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Solution

The fourth proportional to 19,231.11, 28,839.63 and 8,138.67 is: 12,205.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.11 : 28,839.63 = 8,138.67 : x
  2. Step 2: Convert to fraction form
    19,231.11/28,839.63 = 8,138.67/x
  3. Step 3: Cross multiply
    19,231.11x = 28,839.63 × 8,138.67
  4. Step 4: Simplify right side
    19,231.11x = 234,716,231.49
  5. Step 5: Solve for x
    x = 234,716,231.49/19,231.11
  6. Step 6: Final answer
    x = 12,205.03

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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.