Home / 21,933.78-32,917.68-8,787.48

Finding the Fourth Proportional to 21,933.78, 32,917.68 and 8,787.48

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Solution

The fourth proportional to 21,933.78, 32,917.68 and 8,787.48 is: 13,188.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.78 : 32,917.68 = 8,787.48 : x
  2. Step 2: Convert to fraction form
    21,933.78/32,917.68 = 8,787.48/x
  3. Step 3: Cross multiply
    21,933.78x = 32,917.68 × 8,787.48
  4. Step 4: Simplify right side
    21,933.78x = 289,263,454.65
  5. Step 5: Solve for x
    x = 289,263,454.65/21,933.78
  6. Step 6: Final answer
    x = 13,188.03

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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.