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Finding the Fourth Proportional to 18,651, 27,976.56 and 5,504.40

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Solution

The fourth proportional to 18,651, 27,976.56 and 5,504.40 is: 8,256.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651 : 27,976.56 = 5,504.40 : x
  2. Step 2: Convert to fraction form
    18,651/27,976.56 = 5,504.40/x
  3. Step 3: Cross multiply
    18,651x = 27,976.56 × 5,504.40
  4. Step 4: Simplify right side
    18,651x = 153,994,176.86
  5. Step 5: Solve for x
    x = 153,994,176.86/18,651
  6. Step 6: Final answer
    x = 8,256.62

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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.