Home / 13,170.20-18,175.14-7,202.24

Finding the Fourth Proportional to 13,170.20, 18,175.14 and 7,202.24

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Solution

The fourth proportional to 13,170.20, 18,175.14 and 7,202.24 is: 9,939.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.20 : 18,175.14 = 7,202.24 : x
  2. Step 2: Convert to fraction form
    13,170.20/18,175.14 = 7,202.24/x
  3. Step 3: Cross multiply
    13,170.20x = 18,175.14 × 7,202.24
  4. Step 4: Simplify right side
    13,170.20x = 130,901,720.31
  5. Step 5: Solve for x
    x = 130,901,720.31/13,170.20
  6. Step 6: Final answer
    x = 9,939.24

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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.