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Finding the Fourth Proportional to 18,299.40, 27,449.10 and 17,949.48

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Solution

The fourth proportional to 18,299.40, 27,449.10 and 17,949.48 is: 26,924.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.40 : 27,449.10 = 17,949.48 : x
  2. Step 2: Convert to fraction form
    18,299.40/27,449.10 = 17,949.48/x
  3. Step 3: Cross multiply
    18,299.40x = 27,449.10 × 17,949.48
  4. Step 4: Simplify right side
    18,299.40x = 492,697,071.47
  5. Step 5: Solve for x
    x = 492,697,071.47/18,299.40
  6. Step 6: Final answer
    x = 26,924.22

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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.