Home / 13,170.37-18,175.78-7,201.97

Finding the Fourth Proportional to 13,170.37, 18,175.78 and 7,201.97

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Solution

The fourth proportional to 13,170.37, 18,175.78 and 7,201.97 is: 9,939.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.37 : 18,175.78 = 7,201.97 : x
  2. Step 2: Convert to fraction form
    13,170.37/18,175.78 = 7,201.97/x
  3. Step 3: Cross multiply
    13,170.37x = 18,175.78 × 7,201.97
  4. Step 4: Simplify right side
    13,170.37x = 130,901,422.29
  5. Step 5: Solve for x
    x = 130,901,422.29/13,170.37
  6. Step 6: Final answer
    x = 9,939.08

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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.