Home / 13,144.05-18,138.08-7,174.56

Finding the Fourth Proportional to 13,144.05, 18,138.08 and 7,174.56

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Solution

The fourth proportional to 13,144.05, 18,138.08 and 7,174.56 is: 9,900.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.05 : 18,138.08 = 7,174.56 : x
  2. Step 2: Convert to fraction form
    13,144.05/18,138.08 = 7,174.56/x
  3. Step 3: Cross multiply
    13,144.05x = 18,138.08 × 7,174.56
  4. Step 4: Simplify right side
    13,144.05x = 130,132,743.24
  5. Step 5: Solve for x
    x = 130,132,743.24/13,144.05
  6. Step 6: Final answer
    x = 9,900.51

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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.