Home / 13,144.06-18,138.70-7,175.72

Finding the Fourth Proportional to 13,144.06, 18,138.70 and 7,175.72

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Solution

The fourth proportional to 13,144.06, 18,138.70 and 7,175.72 is: 9,902.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.06 : 18,138.70 = 7,175.72 : x
  2. Step 2: Convert to fraction form
    13,144.06/18,138.70 = 7,175.72/x
  3. Step 3: Cross multiply
    13,144.06x = 18,138.70 × 7,175.72
  4. Step 4: Simplify right side
    13,144.06x = 130,158,232.36
  5. Step 5: Solve for x
    x = 130,158,232.36/13,144.06
  6. Step 6: Final answer
    x = 9,902.44

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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.