Home / 13,618.80-20,434.55-8,083.04

Finding the Fourth Proportional to 13,618.80, 20,434.55 and 8,083.04

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Solution

The fourth proportional to 13,618.80, 20,434.55 and 8,083.04 is: 12,128.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.80 : 20,434.55 = 8,083.04 : x
  2. Step 2: Convert to fraction form
    13,618.80/20,434.55 = 8,083.04/x
  3. Step 3: Cross multiply
    13,618.80x = 20,434.55 × 8,083.04
  4. Step 4: Simplify right side
    13,618.80x = 165,173,142.44
  5. Step 5: Solve for x
    x = 165,173,142.44/13,618.80
  6. Step 6: Final answer
    x = 12,128.32

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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.