Home / 11,681.68-16,120.26-6,376.49

Finding the Fourth Proportional to 11,681.68, 16,120.26 and 6,376.49

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Solution

The fourth proportional to 11,681.68, 16,120.26 and 6,376.49 is: 8,799.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.68 : 16,120.26 = 6,376.49 : x
  2. Step 2: Convert to fraction form
    11,681.68/16,120.26 = 6,376.49/x
  3. Step 3: Cross multiply
    11,681.68x = 16,120.26 × 6,376.49
  4. Step 4: Simplify right side
    11,681.68x = 102,790,676.69
  5. Step 5: Solve for x
    x = 102,790,676.69/11,681.68
  6. Step 6: Final answer
    x = 8,799.31

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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.