Home / 20,770.82-28,667.03-13,209.27

Finding the Fourth Proportional to 20,770.82, 28,667.03 and 13,209.27

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Solution

The fourth proportional to 20,770.82, 28,667.03 and 13,209.27 is: 18,230.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.82 : 28,667.03 = 13,209.27 : x
  2. Step 2: Convert to fraction form
    20,770.82/28,667.03 = 13,209.27/x
  3. Step 3: Cross multiply
    20,770.82x = 28,667.03 × 13,209.27
  4. Step 4: Simplify right side
    20,770.82x = 378,670,473.32
  5. Step 5: Solve for x
    x = 378,670,473.32/20,770.82
  6. Step 6: Final answer
    x = 18,230.88

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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.