Home / 18,743.10-25,861.21-11,191.88

Finding the Fourth Proportional to 18,743.10, 25,861.21 and 11,191.88

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Solution

The fourth proportional to 18,743.10, 25,861.21 and 11,191.88 is: 15,442.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.10 : 25,861.21 = 11,191.88 : x
  2. Step 2: Convert to fraction form
    18,743.10/25,861.21 = 11,191.88/x
  3. Step 3: Cross multiply
    18,743.10x = 25,861.21 × 11,191.88
  4. Step 4: Simplify right side
    18,743.10x = 289,435,558.97
  5. Step 5: Solve for x
    x = 289,435,558.97/18,743.10
  6. Step 6: Final answer
    x = 15,442.25

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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.