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Finding the Fourth Proportional to 19,706.98, 27,199.01 and 18,821.22

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Solution

The fourth proportional to 19,706.98, 27,199.01 and 18,821.22 is: 25,976.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,706.98 : 27,199.01 = 18,821.22 : x
  2. Step 2: Convert to fraction form
    19,706.98/27,199.01 = 18,821.22/x
  3. Step 3: Cross multiply
    19,706.98x = 27,199.01 × 18,821.22
  4. Step 4: Simplify right side
    19,706.98x = 511,918,550.99
  5. Step 5: Solve for x
    x = 511,918,550.99/19,706.98
  6. Step 6: Final answer
    x = 25,976.51

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1.5x scale

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.