Home / 20,704.92-30,880.47-17,605.32

Finding the Fourth Proportional to 20,704.92, 30,880.47 and 17,605.32

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Solution

The fourth proportional to 20,704.92, 30,880.47 and 17,605.32 is: 26,257.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.92 : 30,880.47 = 17,605.32 : x
  2. Step 2: Convert to fraction form
    20,704.92/30,880.47 = 17,605.32/x
  3. Step 3: Cross multiply
    20,704.92x = 30,880.47 × 17,605.32
  4. Step 4: Simplify right side
    20,704.92x = 543,660,556.10
  5. Step 5: Solve for x
    x = 543,660,556.10/20,704.92
  6. Step 6: Final answer
    x = 26,257.55

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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.