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Finding the Fourth Proportional to 18,651, 27,976.77 and 4,800

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Solution

The fourth proportional to 18,651, 27,976.77 and 4,800 is: 7,200.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651 : 27,976.77 = 4,800 : x
  2. Step 2: Convert to fraction form
    18,651/27,976.77 = 4,800/x
  3. Step 3: Cross multiply
    18,651x = 27,976.77 × 4,800
  4. Step 4: Simplify right side
    18,651x = 134,288,496
  5. Step 5: Solve for x
    x = 134,288,496/18,651
  6. Step 6: Final answer
    x = 7,200.07

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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.