Home / 18,695.49-25,791.60-11,885.87

Finding the Fourth Proportional to 18,695.49, 25,791.60 and 11,885.87

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Solution

The fourth proportional to 18,695.49, 25,791.60 and 11,885.87 is: 16,397.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.49 : 25,791.60 = 11,885.87 : x
  2. Step 2: Convert to fraction form
    18,695.49/25,791.60 = 11,885.87/x
  3. Step 3: Cross multiply
    18,695.49x = 25,791.60 × 11,885.87
  4. Step 4: Simplify right side
    18,695.49x = 306,555,620.27
  5. Step 5: Solve for x
    x = 306,555,620.27/18,695.49
  6. Step 6: Final answer
    x = 16,397.31

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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.