Home / 20,200.21-30,302.39-7,730.72

Finding the Fourth Proportional to 20,200.21, 30,302.39 and 7,730.72

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Solution

The fourth proportional to 20,200.21, 30,302.39 and 7,730.72 is: 11,596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.21 : 30,302.39 = 7,730.72 : x
  2. Step 2: Convert to fraction form
    20,200.21/30,302.39 = 7,730.72/x
  3. Step 3: Cross multiply
    20,200.21x = 30,302.39 × 7,730.72
  4. Step 4: Simplify right side
    20,200.21x = 234,259,387.50
  5. Step 5: Solve for x
    x = 234,259,387.50/20,200.21
  6. Step 6: Final answer
    x = 11,596.88

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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.