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Finding the Fourth Proportional to 18,008.50, 27,012.87 and 5,696.50

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Solution

The fourth proportional to 18,008.50, 27,012.87 and 5,696.50 is: 8,544.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008.50 : 27,012.87 = 5,696.50 : x
  2. Step 2: Convert to fraction form
    18,008.50/27,012.87 = 5,696.50/x
  3. Step 3: Cross multiply
    18,008.50x = 27,012.87 × 5,696.50
  4. Step 4: Simplify right side
    18,008.50x = 153,878,813.96
  5. Step 5: Solve for x
    x = 153,878,813.96/18,008.50
  6. Step 6: Final answer
    x = 8,544.79

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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.