Home / 26,656.96-39,982.26-20,739.78

Finding the Fourth Proportional to 26,656.96, 39,982.26 and 20,739.78

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Solution

The fourth proportional to 26,656.96, 39,982.26 and 20,739.78 is: 31,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,656.96 : 39,982.26 = 20,739.78 : x
  2. Step 2: Convert to fraction form
    26,656.96/39,982.26 = 20,739.78/x
  3. Step 3: Cross multiply
    26,656.96x = 39,982.26 × 20,739.78
  4. Step 4: Simplify right side
    26,656.96x = 829,223,276.30
  5. Step 5: Solve for x
    x = 829,223,276.30/26,656.96
  6. Step 6: Final answer
    x = 31,107.20

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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.