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Finding the Fourth Proportional to 22,429.92, 30,729.14 and 21,589.14

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Solution

The fourth proportional to 22,429.92, 30,729.14 and 21,589.14 is: 29,577.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,429.92 : 30,729.14 = 21,589.14 : x
  2. Step 2: Convert to fraction form
    22,429.92/30,729.14 = 21,589.14/x
  3. Step 3: Cross multiply
    22,429.92x = 30,729.14 × 21,589.14
  4. Step 4: Simplify right side
    22,429.92x = 663,415,705.54
  5. Step 5: Solve for x
    x = 663,415,705.54/22,429.92
  6. Step 6: Final answer
    x = 29,577.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.