Home / 13,147.92-18,144.36-7,179.66

Finding the Fourth Proportional to 13,147.92, 18,144.36 and 7,179.66

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Solution

The fourth proportional to 13,147.92, 18,144.36 and 7,179.66 is: 9,908.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.92 : 18,144.36 = 7,179.66 : x
  2. Step 2: Convert to fraction form
    13,147.92/18,144.36 = 7,179.66/x
  3. Step 3: Cross multiply
    13,147.92x = 18,144.36 × 7,179.66
  4. Step 4: Simplify right side
    13,147.92x = 130,270,335.72
  5. Step 5: Solve for x
    x = 130,270,335.72/13,147.92
  6. Step 6: Final answer
    x = 9,908.06

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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.