Home / 18,690.60-25,791.78-10,731.72

Finding the Fourth Proportional to 18,690.60, 25,791.78 and 10,731.72

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Solution

The fourth proportional to 18,690.60, 25,791.78 and 10,731.72 is: 14,809.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.60 : 25,791.78 = 10,731.72 : x
  2. Step 2: Convert to fraction form
    18,690.60/25,791.78 = 10,731.72/x
  3. Step 3: Cross multiply
    18,690.60x = 25,791.78 × 10,731.72
  4. Step 4: Simplify right side
    18,690.60x = 276,790,161.26
  5. Step 5: Solve for x
    x = 276,790,161.26/18,690.60
  6. Step 6: Final answer
    x = 14,809.06

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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.