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Finding the Fourth Proportional to 20,297.84, 27,992.87 and 12,744.87

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Solution

The fourth proportional to 20,297.84, 27,992.87 and 12,744.87 is: 17,576.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.84 : 27,992.87 = 12,744.87 : x
  2. Step 2: Convert to fraction form
    20,297.84/27,992.87 = 12,744.87/x
  3. Step 3: Cross multiply
    20,297.84x = 27,992.87 × 12,744.87
  4. Step 4: Simplify right side
    20,297.84x = 356,765,425.35
  5. Step 5: Solve for x
    x = 356,765,425.35/20,297.84
  6. Step 6: Final answer
    x = 17,576.53

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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.