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Finding the Fourth Proportional to 18,333.73, 27,513.70 and 7,811.12

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Solution

The fourth proportional to 18,333.73, 27,513.70 and 7,811.12 is: 11,722.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,333.73 : 27,513.70 = 7,811.12 : x
  2. Step 2: Convert to fraction form
    18,333.73/27,513.70 = 7,811.12/x
  3. Step 3: Cross multiply
    18,333.73x = 27,513.70 × 7,811.12
  4. Step 4: Simplify right side
    18,333.73x = 214,912,674.78
  5. Step 5: Solve for x
    x = 214,912,674.78/18,333.73
  6. Step 6: Final answer
    x = 11,722.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.