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Finding the Fourth Proportional to 18,145, 27,229.02 and 7,201

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Solution

The fourth proportional to 18,145, 27,229.02 and 7,201 is: 10,806.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145 : 27,229.02 = 7,201 : x
  2. Step 2: Convert to fraction form
    18,145/27,229.02 = 7,201/x
  3. Step 3: Cross multiply
    18,145x = 27,229.02 × 7,201
  4. Step 4: Simplify right side
    18,145x = 196,076,173.02
  5. Step 5: Solve for x
    x = 196,076,173.02/18,145
  6. Step 6: Final answer
    x = 10,806.07

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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.