Home / 38,579.90-57,874.14-12,278.54

Finding the Fourth Proportional to 38,579.90, 57,874.14 and 12,278.54

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Solution

The fourth proportional to 38,579.90, 57,874.14 and 12,278.54 is: 18,419.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,579.90 : 57,874.14 = 12,278.54 : x
  2. Step 2: Convert to fraction form
    38,579.90/57,874.14 = 12,278.54/x
  3. Step 3: Cross multiply
    38,579.90x = 57,874.14 × 12,278.54
  4. Step 4: Simplify right side
    38,579.90x = 710,609,942.96
  5. Step 5: Solve for x
    x = 710,609,942.96/38,579.90
  6. Step 6: Final answer
    x = 18,419.18

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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.