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Finding the Third Proportional to 21,480.19 and 29,187.84

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Solution

The third proportional to 21,480.19 and 29,187.84 is: 39,661.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.19 : 29,187.84 = 29,187.84 : x
  2. Step 2: Convert to fraction form
    21,480.19/29,187.84 = 29,187.84/x
  3. Step 3: Cross multiply
    21,480.19x = 29,187.84 × 29,187.84
  4. Step 4: Simplify right side
    21,480.19x = 851,930,222.77
  5. Step 5: Solve for x
    x = 851,930,222.77/21,480.19
  6. Step 6: Final answer
    x = 39,661.21

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.