Home / 20,848.28-28,770.42-11,288

Finding the Fourth Proportional to 20,848.28, 28,770.42 and 11,288

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Solution

The fourth proportional to 20,848.28, 28,770.42 and 11,288 is: 15,577.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.28 : 28,770.42 = 11,288 : x
  2. Step 2: Convert to fraction form
    20,848.28/28,770.42 = 11,288/x
  3. Step 3: Cross multiply
    20,848.28x = 28,770.42 × 11,288
  4. Step 4: Simplify right side
    20,848.28x = 324,760,500.96
  5. Step 5: Solve for x
    x = 324,760,500.96/20,848.28
  6. Step 6: Final answer
    x = 15,577.33

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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.