Home / 12,486.75-17,232.21-7,181.56

Finding the Fourth Proportional to 12,486.75, 17,232.21 and 7,181.56

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Solution

The fourth proportional to 12,486.75, 17,232.21 and 7,181.56 is: 9,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.75 : 17,232.21 = 7,181.56 : x
  2. Step 2: Convert to fraction form
    12,486.75/17,232.21 = 7,181.56/x
  3. Step 3: Cross multiply
    12,486.75x = 17,232.21 × 7,181.56
  4. Step 4: Simplify right side
    12,486.75x = 123,754,150.05
  5. Step 5: Solve for x
    x = 123,754,150.05/12,486.75
  6. Step 6: Final answer
    x = 9,910.84

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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.