Home / 13,161.60-18,132.12-9,175.44

Finding the Fourth Proportional to 13,161.60, 18,132.12 and 9,175.44

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Solution

The fourth proportional to 13,161.60, 18,132.12 and 9,175.44 is: 12,640.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.60 : 18,132.12 = 9,175.44 : x
  2. Step 2: Convert to fraction form
    13,161.60/18,132.12 = 9,175.44/x
  3. Step 3: Cross multiply
    13,161.60x = 18,132.12 × 9,175.44
  4. Step 4: Simplify right side
    13,161.60x = 166,370,179.13
  5. Step 5: Solve for x
    x = 166,370,179.13/13,161.60
  6. Step 6: Final answer
    x = 12,640.57

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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.