Home / 20,517.84-30,782.34-8,828.46

Finding the Fourth Proportional to 20,517.84, 30,782.34 and 8,828.46

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Solution

The fourth proportional to 20,517.84, 30,782.34 and 8,828.46 is: 13,245.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.84 : 30,782.34 = 8,828.46 : x
  2. Step 2: Convert to fraction form
    20,517.84/30,782.34 = 8,828.46/x
  3. Step 3: Cross multiply
    20,517.84x = 30,782.34 × 8,828.46
  4. Step 4: Simplify right side
    20,517.84x = 271,760,657.40
  5. Step 5: Solve for x
    x = 271,760,657.40/20,517.84
  6. Step 6: Final answer
    x = 13,245.09

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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.