Home / 12,630.38-18,945.59-3,396.38

Finding the Fourth Proportional to 12,630.38, 18,945.59 and 3,396.38

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Solution

The fourth proportional to 12,630.38, 18,945.59 and 3,396.38 is: 5,094.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.38 : 18,945.59 = 3,396.38 : x
  2. Step 2: Convert to fraction form
    12,630.38/18,945.59 = 3,396.38/x
  3. Step 3: Cross multiply
    12,630.38x = 18,945.59 × 3,396.38
  4. Step 4: Simplify right side
    12,630.38x = 64,346,311.25
  5. Step 5: Solve for x
    x = 64,346,311.25/12,630.38
  6. Step 6: Final answer
    x = 5,094.57

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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.