Home / 18,211.49-25,119.24-11,141.40

Finding the Fourth Proportional to 18,211.49, 25,119.24 and 11,141.40

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Solution

The fourth proportional to 18,211.49, 25,119.24 and 11,141.40 is: 15,367.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.49 : 25,119.24 = 11,141.40 : x
  2. Step 2: Convert to fraction form
    18,211.49/25,119.24 = 11,141.40/x
  3. Step 3: Cross multiply
    18,211.49x = 25,119.24 × 11,141.40
  4. Step 4: Simplify right side
    18,211.49x = 279,863,500.54
  5. Step 5: Solve for x
    x = 279,863,500.54/18,211.49
  6. Step 6: Final answer
    x = 15,367.42

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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.