Home / 12,738.66-19,105.86-3,379.26

Finding the Fourth Proportional to 12,738.66, 19,105.86 and 3,379.26

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Solution

The fourth proportional to 12,738.66, 19,105.86 and 3,379.26 is: 5,068.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.66 : 19,105.86 = 3,379.26 : x
  2. Step 2: Convert to fraction form
    12,738.66/19,105.86 = 3,379.26/x
  3. Step 3: Cross multiply
    12,738.66x = 19,105.86 × 3,379.26
  4. Step 4: Simplify right side
    12,738.66x = 64,563,668.46
  5. Step 5: Solve for x
    x = 64,563,668.46/12,738.66
  6. Step 6: Final answer
    x = 5,068.32

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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.