Home / 21,863.36-32,780.91-11,999.99

Finding the Fourth Proportional to 21,863.36, 32,780.91 and 11,999.99

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Solution

The fourth proportional to 21,863.36, 32,780.91 and 11,999.99 is: 17,992.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.36 : 32,780.91 = 11,999.99 : x
  2. Step 2: Convert to fraction form
    21,863.36/32,780.91 = 11,999.99/x
  3. Step 3: Cross multiply
    21,863.36x = 32,780.91 × 11,999.99
  4. Step 4: Simplify right side
    21,863.36x = 393,370,592.19
  5. Step 5: Solve for x
    x = 393,370,592.19/21,863.36
  6. Step 6: Final answer
    x = 17,992.23

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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.