Home / 18,518.92-25,556.18-10,135.88

Finding the Fourth Proportional to 18,518.92, 25,556.18 and 10,135.88

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Solution

The fourth proportional to 18,518.92, 25,556.18 and 10,135.88 is: 13,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.92 : 25,556.18 = 10,135.88 : x
  2. Step 2: Convert to fraction form
    18,518.92/25,556.18 = 10,135.88/x
  3. Step 3: Cross multiply
    18,518.92x = 25,556.18 × 10,135.88
  4. Step 4: Simplify right side
    18,518.92x = 259,034,373.74
  5. Step 5: Solve for x
    x = 259,034,373.74/18,518.92
  6. Step 6: Final answer
    x = 13,987.55

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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.