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Finding the Fourth Proportional to 21,593.84, 29,799.23 and 12,645.99

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Solution

The fourth proportional to 21,593.84, 29,799.23 and 12,645.99 is: 17,451.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,593.84 : 29,799.23 = 12,645.99 : x
  2. Step 2: Convert to fraction form
    21,593.84/29,799.23 = 12,645.99/x
  3. Step 3: Cross multiply
    21,593.84x = 29,799.23 × 12,645.99
  4. Step 4: Simplify right side
    21,593.84x = 376,840,701.36
  5. Step 5: Solve for x
    x = 376,840,701.36/21,593.84
  6. Step 6: Final answer
    x = 17,451.31

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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.