Home / 12,449.20-17,171.32-10,399.44

Finding the Fourth Proportional to 12,449.20, 17,171.32 and 10,399.44

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Solution

The fourth proportional to 12,449.20, 17,171.32 and 10,399.44 is: 14,344.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,449.20 : 17,171.32 = 10,399.44 : x
  2. Step 2: Convert to fraction form
    12,449.20/17,171.32 = 10,399.44/x
  3. Step 3: Cross multiply
    12,449.20x = 17,171.32 × 10,399.44
  4. Step 4: Simplify right side
    12,449.20x = 178,572,112.06
  5. Step 5: Solve for x
    x = 178,572,112.06/12,449.20
  6. Step 6: Final answer
    x = 14,344.06

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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.