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Finding the Fourth Proportional to 20,336.72, 30,508.72 and 7,196.72

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Solution

The fourth proportional to 20,336.72, 30,508.72 and 7,196.72 is: 10,796.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.72 : 30,508.72 = 7,196.72 : x
  2. Step 2: Convert to fraction form
    20,336.72/30,508.72 = 7,196.72/x
  3. Step 3: Cross multiply
    20,336.72x = 30,508.72 × 7,196.72
  4. Step 4: Simplify right side
    20,336.72x = 219,562,715.40
  5. Step 5: Solve for x
    x = 219,562,715.40/20,336.72
  6. Step 6: Final answer
    x = 10,796.37

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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.