Home / 20,436.80-30,578.40-18,593.60

Finding the Fourth Proportional to 20,436.80, 30,578.40 and 18,593.60

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Solution

The fourth proportional to 20,436.80, 30,578.40 and 18,593.60 is: 27,820.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.80 : 30,578.40 = 18,593.60 : x
  2. Step 2: Convert to fraction form
    20,436.80/30,578.40 = 18,593.60/x
  3. Step 3: Cross multiply
    20,436.80x = 30,578.40 × 18,593.60
  4. Step 4: Simplify right side
    20,436.80x = 568,562,538.24
  5. Step 5: Solve for x
    x = 568,562,538.24/20,436.80
  6. Step 6: Final answer
    x = 27,820.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.