Home / 13,131.57-18,120.66-7,467.24

Finding the Fourth Proportional to 13,131.57, 18,120.66 and 7,467.24

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Solution

The fourth proportional to 13,131.57, 18,120.66 and 7,467.24 is: 10,304.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.57 : 18,120.66 = 7,467.24 : x
  2. Step 2: Convert to fraction form
    13,131.57/18,120.66 = 7,467.24/x
  3. Step 3: Cross multiply
    13,131.57x = 18,120.66 × 7,467.24
  4. Step 4: Simplify right side
    13,131.57x = 135,311,297.20
  5. Step 5: Solve for x
    x = 135,311,297.20/13,131.57
  6. Step 6: Final answer
    x = 10,304.28

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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.