Home / 18,519.12-25,556.40-10,135.62

Finding the Fourth Proportional to 18,519.12, 25,556.40 and 10,135.62

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Solution

The fourth proportional to 18,519.12, 25,556.40 and 10,135.62 is: 13,987.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.12 : 25,556.40 = 10,135.62 : x
  2. Step 2: Convert to fraction form
    18,519.12/25,556.40 = 10,135.62/x
  3. Step 3: Cross multiply
    18,519.12x = 25,556.40 × 10,135.62
  4. Step 4: Simplify right side
    18,519.12x = 259,029,958.97
  5. Step 5: Solve for x
    x = 259,029,958.97/18,519.12
  6. Step 6: Final answer
    x = 13,987.16

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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.