Home / 13,727.11-18,930.21-11,328.70

Finding the Fourth Proportional to 13,727.11, 18,930.21 and 11,328.70

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Solution

The fourth proportional to 13,727.11, 18,930.21 and 11,328.70 is: 15,622.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.11 : 18,930.21 = 11,328.70 : x
  2. Step 2: Convert to fraction form
    13,727.11/18,930.21 = 11,328.70/x
  3. Step 3: Cross multiply
    13,727.11x = 18,930.21 × 11,328.70
  4. Step 4: Simplify right side
    13,727.11x = 214,454,575.38
  5. Step 5: Solve for x
    x = 214,454,575.38/13,727.11
  6. Step 6: Final answer
    x = 15,622.71

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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.