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Finding the Fourth Proportional to 20,245.68, 30,368.72 and 7,098.37

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Solution

The fourth proportional to 20,245.68, 30,368.72 and 7,098.37 is: 10,647.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.68 : 30,368.72 = 7,098.37 : x
  2. Step 2: Convert to fraction form
    20,245.68/30,368.72 = 7,098.37/x
  3. Step 3: Cross multiply
    20,245.68x = 30,368.72 × 7,098.37
  4. Step 4: Simplify right side
    20,245.68x = 215,568,352.81
  5. Step 5: Solve for x
    x = 215,568,352.81/20,245.68
  6. Step 6: Final answer
    x = 10,647.62

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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.