Home / 18,518.92-25,556.31-10,561.61

Finding the Fourth Proportional to 18,518.92, 25,556.31 and 10,561.61

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Solution

The fourth proportional to 18,518.92, 25,556.31 and 10,561.61 is: 14,575.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.92 : 25,556.31 = 10,561.61 : x
  2. Step 2: Convert to fraction form
    18,518.92/25,556.31 = 10,561.61/x
  3. Step 3: Cross multiply
    18,518.92x = 25,556.31 × 10,561.61
  4. Step 4: Simplify right side
    18,518.92x = 269,915,843.15
  5. Step 5: Solve for x
    x = 269,915,843.15/18,518.92
  6. Step 6: Final answer
    x = 14,575.14

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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.