Home / 20,177.56-30,257-11,165.60

Finding the Fourth Proportional to 20,177.56, 30,257 and 11,165.60

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Solution

The fourth proportional to 20,177.56, 30,257 and 11,165.60 is: 16,743.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.56 : 30,257 = 11,165.60 : x
  2. Step 2: Convert to fraction form
    20,177.56/30,257 = 11,165.60/x
  3. Step 3: Cross multiply
    20,177.56x = 30,257 × 11,165.60
  4. Step 4: Simplify right side
    20,177.56x = 337,837,559.20
  5. Step 5: Solve for x
    x = 337,837,559.20/20,177.56
  6. Step 6: Final answer
    x = 16,743.23

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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.