Home / 13,447.82-18,556.90-7,479.54

Finding the Fourth Proportional to 13,447.82, 18,556.90 and 7,479.54

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Solution

The fourth proportional to 13,447.82, 18,556.90 and 7,479.54 is: 10,321.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.82 : 18,556.90 = 7,479.54 : x
  2. Step 2: Convert to fraction form
    13,447.82/18,556.90 = 7,479.54/x
  3. Step 3: Cross multiply
    13,447.82x = 18,556.90 × 7,479.54
  4. Step 4: Simplify right side
    13,447.82x = 138,797,057.13
  5. Step 5: Solve for x
    x = 138,797,057.13/13,447.82
  6. Step 6: Final answer
    x = 10,321.15

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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.