Home / 13,949.68-19,266.79-11,689.21

Finding the Fourth Proportional to 13,949.68, 19,266.79 and 11,689.21

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Solution

The fourth proportional to 13,949.68, 19,266.79 and 11,689.21 is: 16,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.68 : 19,266.79 = 11,689.21 : x
  2. Step 2: Convert to fraction form
    13,949.68/19,266.79 = 11,689.21/x
  3. Step 3: Cross multiply
    13,949.68x = 19,266.79 × 11,689.21
  4. Step 4: Simplify right side
    13,949.68x = 225,213,520.78
  5. Step 5: Solve for x
    x = 225,213,520.78/13,949.68
  6. Step 6: Final answer
    x = 16,144.71

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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.