Home / 13,170.60-18,175.43-7,202.28

Finding the Fourth Proportional to 13,170.60, 18,175.43 and 7,202.28

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Solution

The fourth proportional to 13,170.60, 18,175.43 and 7,202.28 is: 9,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.60 : 18,175.43 = 7,202.28 : x
  2. Step 2: Convert to fraction form
    13,170.60/18,175.43 = 7,202.28/x
  3. Step 3: Cross multiply
    13,170.60x = 18,175.43 × 7,202.28
  4. Step 4: Simplify right side
    13,170.60x = 130,904,535.98
  5. Step 5: Solve for x
    x = 130,904,535.98/13,170.60
  6. Step 6: Final answer
    x = 9,939.15

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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.