Home / 18,519.09-25,556.37-10,135.59

Finding the Fourth Proportional to 18,519.09, 25,556.37 and 10,135.59

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Solution

The fourth proportional to 18,519.09, 25,556.37 and 10,135.59 is: 13,987.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.09 : 25,556.37 = 10,135.59 : x
  2. Step 2: Convert to fraction form
    18,519.09/25,556.37 = 10,135.59/x
  3. Step 3: Cross multiply
    18,519.09x = 25,556.37 × 10,135.59
  4. Step 4: Simplify right side
    18,519.09x = 259,028,888.21
  5. Step 5: Solve for x
    x = 259,028,888.21/18,519.09
  6. Step 6: Final answer
    x = 13,987.13

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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.