Home / 18,687.19-25,794.58-11,135.89

Finding the Fourth Proportional to 18,687.19, 25,794.58 and 11,135.89

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Solution

The fourth proportional to 18,687.19, 25,794.58 and 11,135.89 is: 15,371.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.19 : 25,794.58 = 11,135.89 : x
  2. Step 2: Convert to fraction form
    18,687.19/25,794.58 = 11,135.89/x
  3. Step 3: Cross multiply
    18,687.19x = 25,794.58 × 11,135.89
  4. Step 4: Simplify right side
    18,687.19x = 287,245,628.20
  5. Step 5: Solve for x
    x = 287,245,628.20/18,687.19
  6. Step 6: Final answer
    x = 15,371.26

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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.