Home / 26,287.80-39,345.30-18,511.80

Finding the Fourth Proportional to 26,287.80, 39,345.30 and 18,511.80

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Solution

The fourth proportional to 26,287.80, 39,345.30 and 18,511.80 is: 27,706.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,287.80 : 39,345.30 = 18,511.80 : x
  2. Step 2: Convert to fraction form
    26,287.80/39,345.30 = 18,511.80/x
  3. Step 3: Cross multiply
    26,287.80x = 39,345.30 × 18,511.80
  4. Step 4: Simplify right side
    26,287.80x = 728,352,324.54
  5. Step 5: Solve for x
    x = 728,352,324.54/26,287.80
  6. Step 6: Final answer
    x = 27,706.86

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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.