Home / 12,758.03-19,138.45-3,398.39

Finding the Fourth Proportional to 12,758.03, 19,138.45 and 3,398.39

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Solution

The fourth proportional to 12,758.03, 19,138.45 and 3,398.39 is: 5,097.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.03 : 19,138.45 = 3,398.39 : x
  2. Step 2: Convert to fraction form
    12,758.03/19,138.45 = 3,398.39/x
  3. Step 3: Cross multiply
    12,758.03x = 19,138.45 × 3,398.39
  4. Step 4: Simplify right side
    12,758.03x = 65,039,917.10
  5. Step 5: Solve for x
    x = 65,039,917.10/12,758.03
  6. Step 6: Final answer
    x = 5,097.96

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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.