Home / 13,186.15-18,196.19-7,216.67

Finding the Fourth Proportional to 13,186.15, 18,196.19 and 7,216.67

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Solution

The fourth proportional to 13,186.15, 18,196.19 and 7,216.67 is: 9,958.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.15 : 18,196.19 = 7,216.67 : x
  2. Step 2: Convert to fraction form
    13,186.15/18,196.19 = 7,216.67/x
  3. Step 3: Cross multiply
    13,186.15x = 18,196.19 × 7,216.67
  4. Step 4: Simplify right side
    13,186.15x = 131,315,771.42
  5. Step 5: Solve for x
    x = 131,315,771.42/13,186.15
  6. Step 6: Final answer
    x = 9,958.62

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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.