Home / 19,450.78-29,129.39-11,105.49

Finding the Fourth Proportional to 19,450.78, 29,129.39 and 11,105.49

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Solution

The fourth proportional to 19,450.78, 29,129.39 and 11,105.49 is: 16,631.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,450.78 : 29,129.39 = 11,105.49 : x
  2. Step 2: Convert to fraction form
    19,450.78/29,129.39 = 11,105.49/x
  3. Step 3: Cross multiply
    19,450.78x = 29,129.39 × 11,105.49
  4. Step 4: Simplify right side
    19,450.78x = 323,496,149.35
  5. Step 5: Solve for x
    x = 323,496,149.35/19,450.78
  6. Step 6: Final answer
    x = 16,631.53

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1.5x scale

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.