Home / 12,519.09-17,294.36-9,997.90

Finding the Fourth Proportional to 12,519.09, 17,294.36 and 9,997.90

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Solution

The fourth proportional to 12,519.09, 17,294.36 and 9,997.90 is: 13,811.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.09 : 17,294.36 = 9,997.90 : x
  2. Step 2: Convert to fraction form
    12,519.09/17,294.36 = 9,997.90/x
  3. Step 3: Cross multiply
    12,519.09x = 17,294.36 × 9,997.90
  4. Step 4: Simplify right side
    12,519.09x = 172,907,188.62
  5. Step 5: Solve for x
    x = 172,907,188.62/12,519.09
  6. Step 6: Final answer
    x = 13,811.48

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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.