Home / 11,725.73-16,181.49-6,420.53

Finding the Fourth Proportional to 11,725.73, 16,181.49 and 6,420.53

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Solution

The fourth proportional to 11,725.73, 16,181.49 and 6,420.53 is: 8,860.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.73 : 16,181.49 = 6,420.53 : x
  2. Step 2: Convert to fraction form
    11,725.73/16,181.49 = 6,420.53/x
  3. Step 3: Cross multiply
    11,725.73x = 16,181.49 × 6,420.53
  4. Step 4: Simplify right side
    11,725.73x = 103,893,782.44
  5. Step 5: Solve for x
    x = 103,893,782.44/11,725.73
  6. Step 6: Final answer
    x = 8,860.33

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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.