Home / 19,181.96-28,771.68-11,787.56

Finding the Fourth Proportional to 19,181.96, 28,771.68 and 11,787.56

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Solution

The fourth proportional to 19,181.96, 28,771.68 and 11,787.56 is: 17,680.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181.96 : 28,771.68 = 11,787.56 : x
  2. Step 2: Convert to fraction form
    19,181.96/28,771.68 = 11,787.56/x
  3. Step 3: Cross multiply
    19,181.96x = 28,771.68 × 11,787.56
  4. Step 4: Simplify right side
    19,181.96x = 339,147,904.30
  5. Step 5: Solve for x
    x = 339,147,904.30/19,181.96
  6. Step 6: Final answer
    x = 17,680.57

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1.5x scale

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.