Home / 20,668.04-28,521.90-11,236.60

Finding the Fourth Proportional to 20,668.04, 28,521.90 and 11,236.60

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Solution

The fourth proportional to 20,668.04, 28,521.90 and 11,236.60 is: 15,506.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.04 : 28,521.90 = 11,236.60 : x
  2. Step 2: Convert to fraction form
    20,668.04/28,521.90 = 11,236.60/x
  3. Step 3: Cross multiply
    20,668.04x = 28,521.90 × 11,236.60
  4. Step 4: Simplify right side
    20,668.04x = 320,489,181.54
  5. Step 5: Solve for x
    x = 320,489,181.54/20,668.04
  6. Step 6: Final answer
    x = 15,506.51

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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.