Home / 13,719.30-18,932.63-7,431.68

Finding the Fourth Proportional to 13,719.30, 18,932.63 and 7,431.68

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Solution

The fourth proportional to 13,719.30, 18,932.63 and 7,431.68 is: 10,255.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.30 : 18,932.63 = 7,431.68 : x
  2. Step 2: Convert to fraction form
    13,719.30/18,932.63 = 7,431.68/x
  3. Step 3: Cross multiply
    13,719.30x = 18,932.63 × 7,431.68
  4. Step 4: Simplify right side
    13,719.30x = 140,701,115.90
  5. Step 5: Solve for x
    x = 140,701,115.90/13,719.30
  6. Step 6: Final answer
    x = 10,255.71

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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.