Home / 20,694.87-30,883.28-18,480.42

Finding the Fourth Proportional to 20,694.87, 30,883.28 and 18,480.42

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Solution

The fourth proportional to 20,694.87, 30,883.28 and 18,480.42 is: 27,578.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.87 : 30,883.28 = 18,480.42 : x
  2. Step 2: Convert to fraction form
    20,694.87/30,883.28 = 18,480.42/x
  3. Step 3: Cross multiply
    20,694.87x = 30,883.28 × 18,480.42
  4. Step 4: Simplify right side
    20,694.87x = 570,735,892.98
  5. Step 5: Solve for x
    x = 570,735,892.98/20,694.87
  6. Step 6: Final answer
    x = 27,578.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.