Home / 18,168.98-25,073.78-11,000.21

Finding the Fourth Proportional to 18,168.98, 25,073.78 and 11,000.21

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Solution

The fourth proportional to 18,168.98, 25,073.78 and 11,000.21 is: 15,180.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168.98 : 25,073.78 = 11,000.21 : x
  2. Step 2: Convert to fraction form
    18,168.98/25,073.78 = 11,000.21/x
  3. Step 3: Cross multiply
    18,168.98x = 25,073.78 × 11,000.21
  4. Step 4: Simplify right side
    18,168.98x = 275,816,665.12
  5. Step 5: Solve for x
    x = 275,816,665.12/18,168.98
  6. Step 6: Final answer
    x = 15,180.64

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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.