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Finding the Fourth Proportional to 13,673, 20,511.48 and 4,309.85

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Solution

The fourth proportional to 13,673, 20,511.48 and 4,309.85 is: 6,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673 : 20,511.48 = 4,309.85 : x
  2. Step 2: Convert to fraction form
    13,673/20,511.48 = 4,309.85/x
  3. Step 3: Cross multiply
    13,673x = 20,511.48 × 4,309.85
  4. Step 4: Simplify right side
    13,673x = 88,401,402.08
  5. Step 5: Solve for x
    x = 88,401,402.08/13,673
  6. Step 6: Final answer
    x = 6,465.40

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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.