Home / 20,613.26-28,446.45-11,181.89

Finding the Fourth Proportional to 20,613.26, 28,446.45 and 11,181.89

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Solution

The fourth proportional to 20,613.26, 28,446.45 and 11,181.89 is: 15,431.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.26 : 28,446.45 = 11,181.89 : x
  2. Step 2: Convert to fraction form
    20,613.26/28,446.45 = 11,181.89/x
  3. Step 3: Cross multiply
    20,613.26x = 28,446.45 × 11,181.89
  4. Step 4: Simplify right side
    20,613.26x = 318,085,074.79
  5. Step 5: Solve for x
    x = 318,085,074.79/20,613.26
  6. Step 6: Final answer
    x = 15,431.09

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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.