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Finding the Fourth Proportional to 18,176.88, 25,084.49 and 11,107.20

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Solution

The fourth proportional to 18,176.88, 25,084.49 and 11,107.20 is: 15,328.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,176.88 : 25,084.49 = 11,107.20 : x
  2. Step 2: Convert to fraction form
    18,176.88/25,084.49 = 11,107.20/x
  3. Step 3: Cross multiply
    18,176.88x = 25,084.49 × 11,107.20
  4. Step 4: Simplify right side
    18,176.88x = 278,618,447.33
  5. Step 5: Solve for x
    x = 278,618,447.33/18,176.88
  6. Step 6: Final answer
    x = 15,328.18

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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.