Home / 11,378.80-15,704.16-6,662.96

Finding the Fourth Proportional to 11,378.80, 15,704.16 and 6,662.96

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Solution

The fourth proportional to 11,378.80, 15,704.16 and 6,662.96 is: 9,195.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.80 : 15,704.16 = 6,662.96 : x
  2. Step 2: Convert to fraction form
    11,378.80/15,704.16 = 6,662.96/x
  3. Step 3: Cross multiply
    11,378.80x = 15,704.16 × 6,662.96
  4. Step 4: Simplify right side
    11,378.80x = 104,636,189.91
  5. Step 5: Solve for x
    x = 104,636,189.91/11,378.80
  6. Step 6: Final answer
    x = 9,195.71

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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.