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Finding the Fourth Proportional to 12,883.83, 19,326.50 and 3,999.99

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Solution

The fourth proportional to 12,883.83, 19,326.50 and 3,999.99 is: 6,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883.83 : 19,326.50 = 3,999.99 : x
  2. Step 2: Convert to fraction form
    12,883.83/19,326.50 = 3,999.99/x
  3. Step 3: Cross multiply
    12,883.83x = 19,326.50 × 3,999.99
  4. Step 4: Simplify right side
    12,883.83x = 77,305,806.74
  5. Step 5: Solve for x
    x = 77,305,806.74/12,883.83
  6. Step 6: Final answer
    x = 6,000.22

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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.