Home / 20,450.60-28,219.78-11,496.68

Finding the Fourth Proportional to 20,450.60, 28,219.78 and 11,496.68

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Solution

The fourth proportional to 20,450.60, 28,219.78 and 11,496.68 is: 15,864.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.60 : 28,219.78 = 11,496.68 : x
  2. Step 2: Convert to fraction form
    20,450.60/28,219.78 = 11,496.68/x
  3. Step 3: Cross multiply
    20,450.60x = 28,219.78 × 11,496.68
  4. Step 4: Simplify right side
    20,450.60x = 324,433,780.33
  5. Step 5: Solve for x
    x = 324,433,780.33/20,450.60
  6. Step 6: Final answer
    x = 15,864.27

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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.