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Finding the Fourth Proportional to 18,225, 27,173.78 and 17,892.85

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Solution

The fourth proportional to 18,225, 27,173.78 and 17,892.85 is: 26,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,225 : 27,173.78 = 17,892.85 : x
  2. Step 2: Convert to fraction form
    18,225/27,173.78 = 17,892.85/x
  3. Step 3: Cross multiply
    18,225x = 27,173.78 × 17,892.85
  4. Step 4: Simplify right side
    18,225x = 486,216,330.12
  5. Step 5: Solve for x
    x = 486,216,330.12/18,225
  6. Step 6: Final answer
    x = 26,678.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.