Home / 20,770.06-28,676.43-12,823.96

Finding the Fourth Proportional to 20,770.06, 28,676.43 and 12,823.96

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Solution

The fourth proportional to 20,770.06, 28,676.43 and 12,823.96 is: 17,705.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.06 : 28,676.43 = 12,823.96 : x
  2. Step 2: Convert to fraction form
    20,770.06/28,676.43 = 12,823.96/x
  3. Step 3: Cross multiply
    20,770.06x = 28,676.43 × 12,823.96
  4. Step 4: Simplify right side
    20,770.06x = 367,745,391.26
  5. Step 5: Solve for x
    x = 367,745,391.26/20,770.06
  6. Step 6: Final answer
    x = 17,705.55

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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.