Home / 13,147.87-18,145.79-7,481.52

Finding the Fourth Proportional to 13,147.87, 18,145.79 and 7,481.52

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Solution

The fourth proportional to 13,147.87, 18,145.79 and 7,481.52 is: 10,325.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.87 : 18,145.79 = 7,481.52 : x
  2. Step 2: Convert to fraction form
    13,147.87/18,145.79 = 7,481.52/x
  3. Step 3: Cross multiply
    13,147.87x = 18,145.79 × 7,481.52
  4. Step 4: Simplify right side
    13,147.87x = 135,758,090.80
  5. Step 5: Solve for x
    x = 135,758,090.80/13,147.87
  6. Step 6: Final answer
    x = 10,325.48

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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.