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Finding the Fourth Proportional to 18,300.48, 27,441.60 and 7,908.48

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Solution

The fourth proportional to 18,300.48, 27,441.60 and 7,908.48 is: 11,858.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.48 : 27,441.60 = 7,908.48 : x
  2. Step 2: Convert to fraction form
    18,300.48/27,441.60 = 7,908.48/x
  3. Step 3: Cross multiply
    18,300.48x = 27,441.60 × 7,908.48
  4. Step 4: Simplify right side
    18,300.48x = 217,021,344.77
  5. Step 5: Solve for x
    x = 217,021,344.77/18,300.48
  6. Step 6: Final answer
    x = 11,858.78

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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.