Home / 11,819.39-16,310.57-6,514.40

Finding the Fourth Proportional to 11,819.39, 16,310.57 and 6,514.40

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Solution

The fourth proportional to 11,819.39, 16,310.57 and 6,514.40 is: 8,989.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.39 : 16,310.57 = 6,514.40 : x
  2. Step 2: Convert to fraction form
    11,819.39/16,310.57 = 6,514.40/x
  3. Step 3: Cross multiply
    11,819.39x = 16,310.57 × 6,514.40
  4. Step 4: Simplify right side
    11,819.39x = 106,253,577.21
  5. Step 5: Solve for x
    x = 106,253,577.21/11,819.39
  6. Step 6: Final answer
    x = 8,989.77

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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.