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Finding the Fourth Proportional to 18,589.16, 27,851.34 and 15,489.08

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Solution

The fourth proportional to 18,589.16, 27,851.34 and 15,489.08 is: 23,206.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.16 : 27,851.34 = 15,489.08 : x
  2. Step 2: Convert to fraction form
    18,589.16/27,851.34 = 15,489.08/x
  3. Step 3: Cross multiply
    18,589.16x = 27,851.34 × 15,489.08
  4. Step 4: Simplify right side
    18,589.16x = 431,391,633.37
  5. Step 5: Solve for x
    x = 431,391,633.37/18,589.16
  6. Step 6: Final answer
    x = 23,206.62

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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.