Home / 11,928.72-17,899.38-8,668.80

Finding the Fourth Proportional to 11,928.72, 17,899.38 and 8,668.80

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Solution

The fourth proportional to 11,928.72, 17,899.38 and 8,668.80 is: 13,007.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.72 : 17,899.38 = 8,668.80 : x
  2. Step 2: Convert to fraction form
    11,928.72/17,899.38 = 8,668.80/x
  3. Step 3: Cross multiply
    11,928.72x = 17,899.38 × 8,668.80
  4. Step 4: Simplify right side
    11,928.72x = 155,166,145.34
  5. Step 5: Solve for x
    x = 155,166,145.34/11,928.72
  6. Step 6: Final answer
    x = 13,007.78

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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.