Home / 11,765.20-16,207.56-8,222.80

Finding the Fourth Proportional to 11,765.20, 16,207.56 and 8,222.80

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Solution

The fourth proportional to 11,765.20, 16,207.56 and 8,222.80 is: 11,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,765.20 : 16,207.56 = 8,222.80 : x
  2. Step 2: Convert to fraction form
    11,765.20/16,207.56 = 8,222.80/x
  3. Step 3: Cross multiply
    11,765.20x = 16,207.56 × 8,222.80
  4. Step 4: Simplify right side
    11,765.20x = 133,271,524.37
  5. Step 5: Solve for x
    x = 133,271,524.37/11,765.20
  6. Step 6: Final answer
    x = 11,327.60

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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.