Home / 11,819.15-16,310.21-6,441.64

Finding the Fourth Proportional to 11,819.15, 16,310.21 and 6,441.64

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Solution

The fourth proportional to 11,819.15, 16,310.21 and 6,441.64 is: 8,889.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.15 : 16,310.21 = 6,441.64 : x
  2. Step 2: Convert to fraction form
    11,819.15/16,310.21 = 6,441.64/x
  3. Step 3: Cross multiply
    11,819.15x = 16,310.21 × 6,441.64
  4. Step 4: Simplify right side
    11,819.15x = 105,064,419.59
  5. Step 5: Solve for x
    x = 105,064,419.59/11,819.15
  6. Step 6: Final answer
    x = 8,889.34

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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.