Home / 20,680.85-28,546.07-11,734.30

Finding the Fourth Proportional to 20,680.85, 28,546.07 and 11,734.30

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Solution

The fourth proportional to 20,680.85, 28,546.07 and 11,734.30 is: 16,197.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.85 : 28,546.07 = 11,734.30 : x
  2. Step 2: Convert to fraction form
    20,680.85/28,546.07 = 11,734.30/x
  3. Step 3: Cross multiply
    20,680.85x = 28,546.07 × 11,734.30
  4. Step 4: Simplify right side
    20,680.85x = 334,968,149.20
  5. Step 5: Solve for x
    x = 334,968,149.20/20,680.85
  6. Step 6: Final answer
    x = 16,197.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.