Home / 13,144.14-18,138.53-7,175.72

Finding the Fourth Proportional to 13,144.14, 18,138.53 and 7,175.72

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Solution

The fourth proportional to 13,144.14, 18,138.53 and 7,175.72 is: 9,902.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.14 : 18,138.53 = 7,175.72 : x
  2. Step 2: Convert to fraction form
    13,144.14/18,138.53 = 7,175.72/x
  3. Step 3: Cross multiply
    13,144.14x = 18,138.53 × 7,175.72
  4. Step 4: Simplify right side
    13,144.14x = 130,157,075.78
  5. Step 5: Solve for x
    x = 130,157,075.78/13,144.14
  6. Step 6: Final answer
    x = 9,902.29

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Double scale
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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.