Home / 11,725.82-16,181.64-6,420.66

Finding the Fourth Proportional to 11,725.82, 16,181.64 and 6,420.66

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Solution

The fourth proportional to 11,725.82, 16,181.64 and 6,420.66 is: 8,860.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.82 : 16,181.64 = 6,420.66 : x
  2. Step 2: Convert to fraction form
    11,725.82/16,181.64 = 6,420.66/x
  3. Step 3: Cross multiply
    11,725.82x = 16,181.64 × 6,420.66
  4. Step 4: Simplify right side
    11,725.82x = 103,896,808.68
  5. Step 5: Solve for x
    x = 103,896,808.68/11,725.82
  6. Step 6: Final answer
    x = 8,860.52

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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.