Home / 20,814.96-28,724.46-11,383.56

Finding the Fourth Proportional to 20,814.96, 28,724.46 and 11,383.56

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Solution

The fourth proportional to 20,814.96, 28,724.46 and 11,383.56 is: 15,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.96 : 28,724.46 = 11,383.56 : x
  2. Step 2: Convert to fraction form
    20,814.96/28,724.46 = 11,383.56/x
  3. Step 3: Cross multiply
    20,814.96x = 28,724.46 × 11,383.56
  4. Step 4: Simplify right side
    20,814.96x = 326,986,613.88
  5. Step 5: Solve for x
    x = 326,986,613.88/20,814.96
  6. Step 6: Final answer
    x = 15,709.21

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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.