Home / 18,610.96-25,679.50-11,891.42

Finding the Fourth Proportional to 18,610.96, 25,679.50 and 11,891.42

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Solution

The fourth proportional to 18,610.96, 25,679.50 and 11,891.42 is: 16,407.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.96 : 25,679.50 = 11,891.42 : x
  2. Step 2: Convert to fraction form
    18,610.96/25,679.50 = 11,891.42/x
  3. Step 3: Cross multiply
    18,610.96x = 25,679.50 × 11,891.42
  4. Step 4: Simplify right side
    18,610.96x = 305,365,719.89
  5. Step 5: Solve for x
    x = 305,365,719.89/18,610.96
  6. Step 6: Final answer
    x = 16,407.84

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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.