Home / 13,550.09-18,700.77-8,245.67

Finding the Fourth Proportional to 13,550.09, 18,700.77 and 8,245.67

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Solution

The fourth proportional to 13,550.09, 18,700.77 and 8,245.67 is: 11,380.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.09 : 18,700.77 = 8,245.67 : x
  2. Step 2: Convert to fraction form
    13,550.09/18,700.77 = 8,245.67/x
  3. Step 3: Cross multiply
    13,550.09x = 18,700.77 × 8,245.67
  4. Step 4: Simplify right side
    13,550.09x = 154,200,378.17
  5. Step 5: Solve for x
    x = 154,200,378.17/13,550.09
  6. Step 6: Final answer
    x = 11,380.03

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1.5x scale

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.