Home / 21,537.42-29,721.64-12,105.99

Finding the Fourth Proportional to 21,537.42, 29,721.64 and 12,105.99

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Solution

The fourth proportional to 21,537.42, 29,721.64 and 12,105.99 is: 16,706.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,537.42 : 29,721.64 = 12,105.99 : x
  2. Step 2: Convert to fraction form
    21,537.42/29,721.64 = 12,105.99/x
  3. Step 3: Cross multiply
    21,537.42x = 29,721.64 × 12,105.99
  4. Step 4: Simplify right side
    21,537.42x = 359,809,876.62
  5. Step 5: Solve for x
    x = 359,809,876.62/21,537.42
  6. Step 6: Final answer
    x = 16,706.27

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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.