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Finding the Fourth Proportional to 18,999.92, 26,219.96 and 10,616.56

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Solution

The fourth proportional to 18,999.92, 26,219.96 and 10,616.56 is: 14,650.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.92 : 26,219.96 = 10,616.56 : x
  2. Step 2: Convert to fraction form
    18,999.92/26,219.96 = 10,616.56/x
  3. Step 3: Cross multiply
    18,999.92x = 26,219.96 × 10,616.56
  4. Step 4: Simplify right side
    18,999.92x = 278,365,778.54
  5. Step 5: Solve for x
    x = 278,365,778.54/18,999.92
  6. Step 6: Final answer
    x = 14,650.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.