Home / 11,429.20-15,771.96-6,393.43

Finding the Fourth Proportional to 11,429.20, 15,771.96 and 6,393.43

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Solution

The fourth proportional to 11,429.20, 15,771.96 and 6,393.43 is: 8,822.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.20 : 15,771.96 = 6,393.43 : x
  2. Step 2: Convert to fraction form
    11,429.20/15,771.96 = 6,393.43/x
  3. Step 3: Cross multiply
    11,429.20x = 15,771.96 × 6,393.43
  4. Step 4: Simplify right side
    11,429.20x = 100,836,922.22
  5. Step 5: Solve for x
    x = 100,836,922.22/11,429.20
  6. Step 6: Final answer
    x = 8,822.75

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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.