Home / 12,450.39-17,181.36-7,144.89

Finding the Fourth Proportional to 12,450.39, 17,181.36 and 7,144.89

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Solution

The fourth proportional to 12,450.39, 17,181.36 and 7,144.89 is: 9,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450.39 : 17,181.36 = 7,144.89 : x
  2. Step 2: Convert to fraction form
    12,450.39/17,181.36 = 7,144.89/x
  3. Step 3: Cross multiply
    12,450.39x = 17,181.36 × 7,144.89
  4. Step 4: Simplify right side
    12,450.39x = 122,758,927.25
  5. Step 5: Solve for x
    x = 122,758,927.25/12,450.39
  6. Step 6: Final answer
    x = 9,859.85

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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.