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Finding the Fourth Proportional to 20,835.44, 31,253.28 and 8,523.44

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Solution

The fourth proportional to 20,835.44, 31,253.28 and 8,523.44 is: 12,785.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.44 : 31,253.28 = 8,523.44 : x
  2. Step 2: Convert to fraction form
    20,835.44/31,253.28 = 8,523.44/x
  3. Step 3: Cross multiply
    20,835.44x = 31,253.28 × 8,523.44
  4. Step 4: Simplify right side
    20,835.44x = 266,385,456.88
  5. Step 5: Solve for x
    x = 266,385,456.88/20,835.44
  6. Step 6: Final answer
    x = 12,785.21

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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.