Home / 18,640.35-25,723.49-10,142.73

Finding the Fourth Proportional to 18,640.35, 25,723.49 and 10,142.73

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Solution

The fourth proportional to 18,640.35, 25,723.49 and 10,142.73 is: 13,996.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.35 : 25,723.49 = 10,142.73 : x
  2. Step 2: Convert to fraction form
    18,640.35/25,723.49 = 10,142.73/x
  3. Step 3: Cross multiply
    18,640.35x = 25,723.49 × 10,142.73
  4. Step 4: Simplify right side
    18,640.35x = 260,906,363.01
  5. Step 5: Solve for x
    x = 260,906,363.01/18,640.35
  6. Step 6: Final answer
    x = 13,996.86

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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.