Home / 11,819.28-16,309.68-6,514.32

Finding the Fourth Proportional to 11,819.28, 16,309.68 and 6,514.32

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Solution

The fourth proportional to 11,819.28, 16,309.68 and 6,514.32 is: 8,989.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.28 : 16,309.68 = 6,514.32 : x
  2. Step 2: Convert to fraction form
    11,819.28/16,309.68 = 6,514.32/x
  3. Step 3: Cross multiply
    11,819.28x = 16,309.68 × 6,514.32
  4. Step 4: Simplify right side
    11,819.28x = 106,246,474.62
  5. Step 5: Solve for x
    x = 106,246,474.62/11,819.28
  6. Step 6: Final answer
    x = 8,989.25

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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.