Home / 11,947.05-16,486.92-6,641.88

Finding the Fourth Proportional to 11,947.05, 16,486.92 and 6,641.88

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Solution

The fourth proportional to 11,947.05, 16,486.92 and 6,641.88 is: 9,165.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.05 : 16,486.92 = 6,641.88 : x
  2. Step 2: Convert to fraction form
    11,947.05/16,486.92 = 6,641.88/x
  3. Step 3: Cross multiply
    11,947.05x = 16,486.92 × 6,641.88
  4. Step 4: Simplify right side
    11,947.05x = 109,504,144.21
  5. Step 5: Solve for x
    x = 109,504,144.21/11,947.05
  6. Step 6: Final answer
    x = 9,165.79

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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.