Home / 13,384.20-20,068.30-8,193.80

Finding the Fourth Proportional to 13,384.20, 20,068.30 and 8,193.80

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Solution

The fourth proportional to 13,384.20, 20,068.30 and 8,193.80 is: 12,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.20 : 20,068.30 = 8,193.80 : x
  2. Step 2: Convert to fraction form
    13,384.20/20,068.30 = 8,193.80/x
  3. Step 3: Cross multiply
    13,384.20x = 20,068.30 × 8,193.80
  4. Step 4: Simplify right side
    13,384.20x = 164,435,636.54
  5. Step 5: Solve for x
    x = 164,435,636.54/13,384.20
  6. Step 6: Final answer
    x = 12,285.80

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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.