Home / 26,289.80-39,348.30-18,513.80

Finding the Fourth Proportional to 26,289.80, 39,348.30 and 18,513.80

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Solution

The fourth proportional to 26,289.80, 39,348.30 and 18,513.80 is: 27,709.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,289.80 : 39,348.30 = 18,513.80 : x
  2. Step 2: Convert to fraction form
    26,289.80/39,348.30 = 18,513.80/x
  3. Step 3: Cross multiply
    26,289.80x = 39,348.30 × 18,513.80
  4. Step 4: Simplify right side
    26,289.80x = 728,486,556.54
  5. Step 5: Solve for x
    x = 728,486,556.54/26,289.80
  6. Step 6: Final answer
    x = 27,709.86

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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.