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Finding the Fourth Proportional to 20,469.66, 30,673.72 and 11,575.41

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Solution

The fourth proportional to 20,469.66, 30,673.72 and 11,575.41 is: 17,345.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.66 : 30,673.72 = 11,575.41 : x
  2. Step 2: Convert to fraction form
    20,469.66/30,673.72 = 11,575.41/x
  3. Step 3: Cross multiply
    20,469.66x = 30,673.72 × 11,575.41
  4. Step 4: Simplify right side
    20,469.66x = 355,060,885.23
  5. Step 5: Solve for x
    x = 355,060,885.23/20,469.66
  6. Step 6: Final answer
    x = 17,345.71

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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.