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Finding the Fourth Proportional to 20,651.68, 30,975.63 and 6,800.68

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Solution

The fourth proportional to 20,651.68, 30,975.63 and 6,800.68 is: 10,200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.68 : 30,975.63 = 6,800.68 : x
  2. Step 2: Convert to fraction form
    20,651.68/30,975.63 = 6,800.68/x
  3. Step 3: Cross multiply
    20,651.68x = 30,975.63 × 6,800.68
  4. Step 4: Simplify right side
    20,651.68x = 210,655,347.43
  5. Step 5: Solve for x
    x = 210,655,347.43/20,651.68
  6. Step 6: Final answer
    x = 10,200.40

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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.