Home / 13,144.23-18,138.78-7,175.73

Finding the Fourth Proportional to 13,144.23, 18,138.78 and 7,175.73

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Solution

The fourth proportional to 13,144.23, 18,138.78 and 7,175.73 is: 9,902.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.23 : 18,138.78 = 7,175.73 : x
  2. Step 2: Convert to fraction form
    13,144.23/18,138.78 = 7,175.73/x
  3. Step 3: Cross multiply
    13,144.23x = 18,138.78 × 7,175.73
  4. Step 4: Simplify right side
    13,144.23x = 130,158,987.81
  5. Step 5: Solve for x
    x = 130,158,987.81/13,144.23
  6. Step 6: Final answer
    x = 9,902.37

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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.