Home / 15,899.75-21,942.68-9,185.66

Finding the Fourth Proportional to 15,899.75, 21,942.68 and 9,185.66

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Solution

The fourth proportional to 15,899.75, 21,942.68 and 9,185.66 is: 12,676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.75 : 21,942.68 = 9,185.66 : x
  2. Step 2: Convert to fraction form
    15,899.75/21,942.68 = 9,185.66/x
  3. Step 3: Cross multiply
    15,899.75x = 21,942.68 × 9,185.66
  4. Step 4: Simplify right side
    15,899.75x = 201,557,997.97
  5. Step 5: Solve for x
    x = 201,557,997.97/15,899.75
  6. Step 6: Final answer
    x = 12,676.80

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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.