Home / 13,784.41-19,021.91-8,119.39

Finding the Fourth Proportional to 13,784.41, 19,021.91 and 8,119.39

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Solution

The fourth proportional to 13,784.41, 19,021.91 and 8,119.39 is: 11,204.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.41 : 19,021.91 = 8,119.39 : x
  2. Step 2: Convert to fraction form
    13,784.41/19,021.91 = 8,119.39/x
  3. Step 3: Cross multiply
    13,784.41x = 19,021.91 × 8,119.39
  4. Step 4: Simplify right side
    13,784.41x = 154,446,278.58
  5. Step 5: Solve for x
    x = 154,446,278.58/13,784.41
  6. Step 6: Final answer
    x = 11,204.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.