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Finding the Fourth Proportional to 26,129.96, 39,201.44 and 7,661.96

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Solution

The fourth proportional to 26,129.96, 39,201.44 and 7,661.96 is: 11,494.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,129.96 : 39,201.44 = 7,661.96 : x
  2. Step 2: Convert to fraction form
    26,129.96/39,201.44 = 7,661.96/x
  3. Step 3: Cross multiply
    26,129.96x = 39,201.44 × 7,661.96
  4. Step 4: Simplify right side
    26,129.96x = 300,359,688.37
  5. Step 5: Solve for x
    x = 300,359,688.37/26,129.96
  6. Step 6: Final answer
    x = 11,494.84

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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.