Home / 11,245.64-15,515.70-6,464.84

Finding the Fourth Proportional to 11,245.64, 15,515.70 and 6,464.84

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Solution

The fourth proportional to 11,245.64, 15,515.70 and 6,464.84 is: 8,919.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,245.64 : 15,515.70 = 6,464.84 : x
  2. Step 2: Convert to fraction form
    11,245.64/15,515.70 = 6,464.84/x
  3. Step 3: Cross multiply
    11,245.64x = 15,515.70 × 6,464.84
  4. Step 4: Simplify right side
    11,245.64x = 100,306,517.99
  5. Step 5: Solve for x
    x = 100,306,517.99/11,245.64
  6. Step 6: Final answer
    x = 8,919.59

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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.