Home / 19,866.19-29,825.32-13,321.66

Finding the Fourth Proportional to 19,866.19, 29,825.32 and 13,321.66

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Solution

The fourth proportional to 19,866.19, 29,825.32 and 13,321.66 is: 19,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.19 : 29,825.32 = 13,321.66 : x
  2. Step 2: Convert to fraction form
    19,866.19/29,825.32 = 13,321.66/x
  3. Step 3: Cross multiply
    19,866.19x = 29,825.32 × 13,321.66
  4. Step 4: Simplify right side
    19,866.19x = 397,322,623.30
  5. Step 5: Solve for x
    x = 397,322,623.30/19,866.19
  6. Step 6: Final answer
    x = 19,999.95

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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.