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Finding the Fourth Proportional to 18,242.50, 25,164.92 and 12,263.90

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Solution

The fourth proportional to 18,242.50, 25,164.92 and 12,263.90 is: 16,917.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,242.50 : 25,164.92 = 12,263.90 : x
  2. Step 2: Convert to fraction form
    18,242.50/25,164.92 = 12,263.90/x
  3. Step 3: Cross multiply
    18,242.50x = 25,164.92 × 12,263.90
  4. Step 4: Simplify right side
    18,242.50x = 308,620,062.39
  5. Step 5: Solve for x
    x = 308,620,062.39/18,242.50
  6. Step 6: Final answer
    x = 16,917.64

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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.