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Finding the Fourth Proportional to 18,843.30, 28,240.52 and 7,736.85

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Solution

The fourth proportional to 18,843.30, 28,240.52 and 7,736.85 is: 11,595.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.30 : 28,240.52 = 7,736.85 : x
  2. Step 2: Convert to fraction form
    18,843.30/28,240.52 = 7,736.85/x
  3. Step 3: Cross multiply
    18,843.30x = 28,240.52 × 7,736.85
  4. Step 4: Simplify right side
    18,843.30x = 218,492,628.48
  5. Step 5: Solve for x
    x = 218,492,628.48/18,843.30
  6. Step 6: Final answer
    x = 11,595.24

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1.5x scale

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.