Home / 13,719.48-18,932.82-7,431.87

Finding the Fourth Proportional to 13,719.48, 18,932.82 and 7,431.87

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Solution

The fourth proportional to 13,719.48, 18,932.82 and 7,431.87 is: 10,255.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.48 : 18,932.82 = 7,431.87 : x
  2. Step 2: Convert to fraction form
    13,719.48/18,932.82 = 7,431.87/x
  3. Step 3: Cross multiply
    13,719.48x = 18,932.82 × 7,431.87
  4. Step 4: Simplify right side
    13,719.48x = 140,706,256.97
  5. Step 5: Solve for x
    x = 140,706,256.97/13,719.48
  6. Step 6: Final answer
    x = 10,255.95

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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.