Home / 11,819.12-16,310.43-6,513.82

Finding the Fourth Proportional to 11,819.12, 16,310.43 and 6,513.82

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Solution

The fourth proportional to 11,819.12, 16,310.43 and 6,513.82 is: 8,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.12 : 16,310.43 = 6,513.82 : x
  2. Step 2: Convert to fraction form
    11,819.12/16,310.43 = 6,513.82/x
  3. Step 3: Cross multiply
    11,819.12x = 16,310.43 × 6,513.82
  4. Step 4: Simplify right side
    11,819.12x = 106,243,164.37
  5. Step 5: Solve for x
    x = 106,243,164.37/11,819.12
  6. Step 6: Final answer
    x = 8,989.10

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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.