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Finding the Fourth Proportional to 18,245.84, 25,178.50 and 10,288.81

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Solution

The fourth proportional to 18,245.84, 25,178.50 and 10,288.81 is: 14,198.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.84 : 25,178.50 = 10,288.81 : x
  2. Step 2: Convert to fraction form
    18,245.84/25,178.50 = 10,288.81/x
  3. Step 3: Cross multiply
    18,245.84x = 25,178.50 × 10,288.81
  4. Step 4: Simplify right side
    18,245.84x = 259,056,625.25
  5. Step 5: Solve for x
    x = 259,056,625.25/18,245.84
  6. Step 6: Final answer
    x = 14,198.12

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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.