Home / 19,105.26-28,659.71-7,419.39

Finding the Fourth Proportional to 19,105.26, 28,659.71 and 7,419.39

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Solution

The fourth proportional to 19,105.26, 28,659.71 and 7,419.39 is: 11,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,105.26 : 28,659.71 = 7,419.39 : x
  2. Step 2: Convert to fraction form
    19,105.26/28,659.71 = 7,419.39/x
  3. Step 3: Cross multiply
    19,105.26x = 28,659.71 × 7,419.39
  4. Step 4: Simplify right side
    19,105.26x = 212,637,565.78
  5. Step 5: Solve for x
    x = 212,637,565.78/19,105.26
  6. Step 6: Final answer
    x = 11,129.79

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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.