Home / 30,072.85-45,019.41-18,190.67

Finding the Fourth Proportional to 30,072.85, 45,019.41 and 18,190.67

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Solution

The fourth proportional to 30,072.85, 45,019.41 and 18,190.67 is: 27,231.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,072.85 : 45,019.41 = 18,190.67 : x
  2. Step 2: Convert to fraction form
    30,072.85/45,019.41 = 18,190.67/x
  3. Step 3: Cross multiply
    30,072.85x = 45,019.41 × 18,190.67
  4. Step 4: Simplify right side
    30,072.85x = 818,933,022.00
  5. Step 5: Solve for x
    x = 818,933,022.00/30,072.85
  6. Step 6: Final answer
    x = 27,231.64

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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.