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Finding the Fourth Proportional to 13,465.72, 18,542.11 and 12,676.68

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Solution

The fourth proportional to 13,465.72, 18,542.11 and 12,676.68 is: 17,455.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.72 : 18,542.11 = 12,676.68 : x
  2. Step 2: Convert to fraction form
    13,465.72/18,542.11 = 12,676.68/x
  3. Step 3: Cross multiply
    13,465.72x = 18,542.11 × 12,676.68
  4. Step 4: Simplify right side
    13,465.72x = 235,052,363.30
  5. Step 5: Solve for x
    x = 235,052,363.30/13,465.72
  6. Step 6: Final answer
    x = 17,455.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.