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Finding the Fourth Proportional to 21,794.87, 30,052.14 and 19,669.71

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Solution

The fourth proportional to 21,794.87, 30,052.14 and 19,669.71 is: 27,121.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,794.87 : 30,052.14 = 19,669.71 : x
  2. Step 2: Convert to fraction form
    21,794.87/30,052.14 = 19,669.71/x
  3. Step 3: Cross multiply
    21,794.87x = 30,052.14 × 19,669.71
  4. Step 4: Simplify right side
    21,794.87x = 591,116,991.37
  5. Step 5: Solve for x
    x = 591,116,991.37/21,794.87
  6. Step 6: Final answer
    x = 27,121.84

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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.