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Finding the Fourth Proportional to 18,991.92, 26,208.93 and 10,494.03

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Solution

The fourth proportional to 18,991.92, 26,208.93 and 10,494.03 is: 14,481.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.92 : 26,208.93 = 10,494.03 : x
  2. Step 2: Convert to fraction form
    18,991.92/26,208.93 = 10,494.03/x
  3. Step 3: Cross multiply
    18,991.92x = 26,208.93 × 10,494.03
  4. Step 4: Simplify right side
    18,991.92x = 275,037,297.69
  5. Step 5: Solve for x
    x = 275,037,297.69/18,991.92
  6. Step 6: Final answer
    x = 14,481.81

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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.