Home / 21,540.44-29,728.49-12,109.01

Finding the Fourth Proportional to 21,540.44, 29,728.49 and 12,109.01

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Solution

The fourth proportional to 21,540.44, 29,728.49 and 12,109.01 is: 16,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.44 : 29,728.49 = 12,109.01 : x
  2. Step 2: Convert to fraction form
    21,540.44/29,728.49 = 12,109.01/x
  3. Step 3: Cross multiply
    21,540.44x = 29,728.49 × 12,109.01
  4. Step 4: Simplify right side
    21,540.44x = 359,982,522.15
  5. Step 5: Solve for x
    x = 359,982,522.15/21,540.44
  6. Step 6: Final answer
    x = 16,711.94

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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.