Home / 20,358.63-28,096.53-11,976.75

Finding the Fourth Proportional to 20,358.63, 28,096.53 and 11,976.75

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Solution

The fourth proportional to 20,358.63, 28,096.53 and 11,976.75 is: 16,528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.63 : 28,096.53 = 11,976.75 : x
  2. Step 2: Convert to fraction form
    20,358.63/28,096.53 = 11,976.75/x
  3. Step 3: Cross multiply
    20,358.63x = 28,096.53 × 11,976.75
  4. Step 4: Simplify right side
    20,358.63x = 336,505,115.68
  5. Step 5: Solve for x
    x = 336,505,115.68/20,358.63
  6. Step 6: Final answer
    x = 16,528.87

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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.