Home / 18,922.34-28,354.31-11,982.26

Finding the Fourth Proportional to 18,922.34, 28,354.31 and 11,982.26

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Solution

The fourth proportional to 18,922.34, 28,354.31 and 11,982.26 is: 17,954.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.34 : 28,354.31 = 11,982.26 : x
  2. Step 2: Convert to fraction form
    18,922.34/28,354.31 = 11,982.26/x
  3. Step 3: Cross multiply
    18,922.34x = 28,354.31 × 11,982.26
  4. Step 4: Simplify right side
    18,922.34x = 339,748,714.54
  5. Step 5: Solve for x
    x = 339,748,714.54/18,922.34
  6. Step 6: Final answer
    x = 17,954.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.