Home / 12,919.69-19,380.77-5,022.82

Finding the Fourth Proportional to 12,919.69, 19,380.77 and 5,022.82

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Solution

The fourth proportional to 12,919.69, 19,380.77 and 5,022.82 is: 7,534.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.69 : 19,380.77 = 5,022.82 : x
  2. Step 2: Convert to fraction form
    12,919.69/19,380.77 = 5,022.82/x
  3. Step 3: Cross multiply
    12,919.69x = 19,380.77 × 5,022.82
  4. Step 4: Simplify right side
    12,919.69x = 97,346,137.12
  5. Step 5: Solve for x
    x = 97,346,137.12/12,919.69
  6. Step 6: Final answer
    x = 7,534.71

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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.