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Finding the Third Proportional to 18,120.94 and 25,518.38

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Solution

The third proportional to 18,120.94 and 25,518.38 is: 35,935.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.94 : 25,518.38 = 25,518.38 : x
  2. Step 2: Convert to fraction form
    18,120.94/25,518.38 = 25,518.38/x
  3. Step 3: Cross multiply
    18,120.94x = 25,518.38 × 25,518.38
  4. Step 4: Simplify right side
    18,120.94x = 651,187,462.64
  5. Step 5: Solve for x
    x = 651,187,462.64/18,120.94
  6. Step 6: Final answer
    x = 35,935.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.