Home / 12,163.85-18,245.60-6,615.89

Finding the Fourth Proportional to 12,163.85, 18,245.60 and 6,615.89

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Solution

The fourth proportional to 12,163.85, 18,245.60 and 6,615.89 is: 9,923.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.85 : 18,245.60 = 6,615.89 : x
  2. Step 2: Convert to fraction form
    12,163.85/18,245.60 = 6,615.89/x
  3. Step 3: Cross multiply
    12,163.85x = 18,245.60 × 6,615.89
  4. Step 4: Simplify right side
    12,163.85x = 120,710,849.50
  5. Step 5: Solve for x
    x = 120,710,849.50/12,163.85
  6. Step 6: Final answer
    x = 9,923.74

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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.