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Finding the Fourth Proportional to 43,508.70, 65,249.10 and 13,919.49

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Solution

The fourth proportional to 43,508.70, 65,249.10 and 13,919.49 is: 20,874.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,508.70 : 65,249.10 = 13,919.49 : x
  2. Step 2: Convert to fraction form
    43,508.70/65,249.10 = 13,919.49/x
  3. Step 3: Cross multiply
    43,508.70x = 65,249.10 × 13,919.49
  4. Step 4: Simplify right side
    43,508.70x = 908,234,194.96
  5. Step 5: Solve for x
    x = 908,234,194.96/43,508.70
  6. Step 6: Final answer
    x = 20,874.77

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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.