Home / 13,170.96-18,175.79-7,202.75

Finding the Fourth Proportional to 13,170.96, 18,175.79 and 7,202.75

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Solution

The fourth proportional to 13,170.96, 18,175.79 and 7,202.75 is: 9,939.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.96 : 18,175.79 = 7,202.75 : x
  2. Step 2: Convert to fraction form
    13,170.96/18,175.79 = 7,202.75/x
  3. Step 3: Cross multiply
    13,170.96x = 18,175.79 × 7,202.75
  4. Step 4: Simplify right side
    13,170.96x = 130,915,598.55
  5. Step 5: Solve for x
    x = 130,915,598.55/13,170.96
  6. Step 6: Final answer
    x = 9,939.72

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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.