Home / 12,399.12-17,005.86-10,999.44

Finding the Fourth Proportional to 12,399.12, 17,005.86 and 10,999.44

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Solution

The fourth proportional to 12,399.12, 17,005.86 and 10,999.44 is: 15,086.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.12 : 17,005.86 = 10,999.44 : x
  2. Step 2: Convert to fraction form
    12,399.12/17,005.86 = 10,999.44/x
  3. Step 3: Cross multiply
    12,399.12x = 17,005.86 × 10,999.44
  4. Step 4: Simplify right side
    12,399.12x = 187,054,936.72
  5. Step 5: Solve for x
    x = 187,054,936.72/12,399.12
  6. Step 6: Final answer
    x = 15,086.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.