Home / 20,650.50-30,975.76-6,800.58

Finding the Fourth Proportional to 20,650.50, 30,975.76 and 6,800.58

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Solution

The fourth proportional to 20,650.50, 30,975.76 and 6,800.58 is: 10,200.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.50 : 30,975.76 = 6,800.58 : x
  2. Step 2: Convert to fraction form
    20,650.50/30,975.76 = 6,800.58/x
  3. Step 3: Cross multiply
    20,650.50x = 30,975.76 × 6,800.58
  4. Step 4: Simplify right side
    20,650.50x = 210,653,133.94
  5. Step 5: Solve for x
    x = 210,653,133.94/20,650.50
  6. Step 6: Final answer
    x = 10,200.87

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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.