Home / 12,821-19,200.54-6,230.92

Finding the Fourth Proportional to 12,821, 19,200.54 and 6,230.92

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Solution

The fourth proportional to 12,821, 19,200.54 and 6,230.92 is: 9,331.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821 : 19,200.54 = 6,230.92 : x
  2. Step 2: Convert to fraction form
    12,821/19,200.54 = 6,230.92/x
  3. Step 3: Cross multiply
    12,821x = 19,200.54 × 6,230.92
  4. Step 4: Simplify right side
    12,821x = 119,637,028.70
  5. Step 5: Solve for x
    x = 119,637,028.70/12,821
  6. Step 6: Final answer
    x = 9,331.33

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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.