Home / 20,998.96-28,944.78-14,190.85

Finding the Fourth Proportional to 20,998.96, 28,944.78 and 14,190.85

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Solution

The fourth proportional to 20,998.96, 28,944.78 and 14,190.85 is: 19,560.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.96 : 28,944.78 = 14,190.85 : x
  2. Step 2: Convert to fraction form
    20,998.96/28,944.78 = 14,190.85/x
  3. Step 3: Cross multiply
    20,998.96x = 28,944.78 × 14,190.85
  4. Step 4: Simplify right side
    20,998.96x = 410,751,031.26
  5. Step 5: Solve for x
    x = 410,751,031.26/20,998.96
  6. Step 6: Final answer
    x = 19,560.54

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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.