Home / 26,481.12-39,700.80-18,135.90

Finding the Fourth Proportional to 26,481.12, 39,700.80 and 18,135.90

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Solution

The fourth proportional to 26,481.12, 39,700.80 and 18,135.90 is: 27,189.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,481.12 : 39,700.80 = 18,135.90 : x
  2. Step 2: Convert to fraction form
    26,481.12/39,700.80 = 18,135.90/x
  3. Step 3: Cross multiply
    26,481.12x = 39,700.80 × 18,135.90
  4. Step 4: Simplify right side
    26,481.12x = 720,009,738.72
  5. Step 5: Solve for x
    x = 720,009,738.72/26,481.12
  6. Step 6: Final answer
    x = 27,189.55

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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.