Home / 13,766.34-20,649.51-3,378

Finding the Fourth Proportional to 13,766.34, 20,649.51 and 3,378

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Solution

The fourth proportional to 13,766.34, 20,649.51 and 3,378 is: 5,067

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,766.34 : 20,649.51 = 3,378 : x
  2. Step 2: Convert to fraction form
    13,766.34/20,649.51 = 3,378/x
  3. Step 3: Cross multiply
    13,766.34x = 20,649.51 × 3,378
  4. Step 4: Simplify right side
    13,766.34x = 69,754,044.78
  5. Step 5: Solve for x
    x = 69,754,044.78/13,766.34
  6. Step 6: Final answer
    x = 5,067

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.