Home / 15,348.82-21,183.18-8,634.70

Finding the Fourth Proportional to 15,348.82, 21,183.18 and 8,634.70

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Solution

The fourth proportional to 15,348.82, 21,183.18 and 8,634.70 is: 11,916.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.82 : 21,183.18 = 8,634.70 : x
  2. Step 2: Convert to fraction form
    15,348.82/21,183.18 = 8,634.70/x
  3. Step 3: Cross multiply
    15,348.82x = 21,183.18 × 8,634.70
  4. Step 4: Simplify right side
    15,348.82x = 182,910,404.35
  5. Step 5: Solve for x
    x = 182,910,404.35/15,348.82
  6. Step 6: Final answer
    x = 11,916.90

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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.