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Finding the Fourth Proportional to 20,473.96, 30,709.68 and 7,325.68

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Solution

The fourth proportional to 20,473.96, 30,709.68 and 7,325.68 is: 10,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.96 : 30,709.68 = 7,325.68 : x
  2. Step 2: Convert to fraction form
    20,473.96/30,709.68 = 7,325.68/x
  3. Step 3: Cross multiply
    20,473.96x = 30,709.68 × 7,325.68
  4. Step 4: Simplify right side
    20,473.96x = 224,969,288.58
  5. Step 5: Solve for x
    x = 224,969,288.58/20,473.96
  6. Step 6: Final answer
    x = 10,988.07

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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.