Home / 20,668.08-28,520.97-11,236.65

Finding the Fourth Proportional to 20,668.08, 28,520.97 and 11,236.65

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Solution

The fourth proportional to 20,668.08, 28,520.97 and 11,236.65 is: 15,506.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.08 : 28,520.97 = 11,236.65 : x
  2. Step 2: Convert to fraction form
    20,668.08/28,520.97 = 11,236.65/x
  3. Step 3: Cross multiply
    20,668.08x = 28,520.97 × 11,236.65
  4. Step 4: Simplify right side
    20,668.08x = 320,480,157.55
  5. Step 5: Solve for x
    x = 320,480,157.55/20,668.08
  6. Step 6: Final answer
    x = 15,506.04

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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.