Home / 21,425.21-29,566.91-11,865.41

Finding the Fourth Proportional to 21,425.21, 29,566.91 and 11,865.41

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Solution

The fourth proportional to 21,425.21, 29,566.91 and 11,865.41 is: 16,374.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.21 : 29,566.91 = 11,865.41 : x
  2. Step 2: Convert to fraction form
    21,425.21/29,566.91 = 11,865.41/x
  3. Step 3: Cross multiply
    21,425.21x = 29,566.91 × 11,865.41
  4. Step 4: Simplify right side
    21,425.21x = 350,823,450.26
  5. Step 5: Solve for x
    x = 350,823,450.26/21,425.21
  6. Step 6: Final answer
    x = 16,374.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.