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Finding the Fourth Proportional to 27,989.20, 41,935.20 and 23,615.20

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Solution

The fourth proportional to 27,989.20, 41,935.20 and 23,615.20 is: 35,381.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,989.20 : 41,935.20 = 23,615.20 : x
  2. Step 2: Convert to fraction form
    27,989.20/41,935.20 = 23,615.20/x
  3. Step 3: Cross multiply
    27,989.20x = 41,935.20 × 23,615.20
  4. Step 4: Simplify right side
    27,989.20x = 990,308,135.04
  5. Step 5: Solve for x
    x = 990,308,135.04/27,989.20
  6. Step 6: Final answer
    x = 35,381.79

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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.