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Finding the Fourth Proportional to 20,482.56, 30,727.68 and 6,629.76

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Solution

The fourth proportional to 20,482.56, 30,727.68 and 6,629.76 is: 9,945.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.56 : 30,727.68 = 6,629.76 : x
  2. Step 2: Convert to fraction form
    20,482.56/30,727.68 = 6,629.76/x
  3. Step 3: Cross multiply
    20,482.56x = 30,727.68 × 6,629.76
  4. Step 4: Simplify right side
    20,482.56x = 203,717,143.76
  5. Step 5: Solve for x
    x = 203,717,143.76/20,482.56
  6. Step 6: Final answer
    x = 9,945.88

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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.