Home / 20,703.87-28,577.79-11,757.33

Finding the Fourth Proportional to 20,703.87, 28,577.79 and 11,757.33

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Solution

The fourth proportional to 20,703.87, 28,577.79 and 11,757.33 is: 16,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.87 : 28,577.79 = 11,757.33 : x
  2. Step 2: Convert to fraction form
    20,703.87/28,577.79 = 11,757.33/x
  3. Step 3: Cross multiply
    20,703.87x = 28,577.79 × 11,757.33
  4. Step 4: Simplify right side
    20,703.87x = 335,998,507.70
  5. Step 5: Solve for x
    x = 335,998,507.70/20,703.87
  6. Step 6: Final answer
    x = 16,228.78

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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.