Home / 26,693.40-39,992.10-12,811.80

Finding the Fourth Proportional to 26,693.40, 39,992.10 and 12,811.80

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Solution

The fourth proportional to 26,693.40, 39,992.10 and 12,811.80 is: 19,194.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,693.40 : 39,992.10 = 12,811.80 : x
  2. Step 2: Convert to fraction form
    26,693.40/39,992.10 = 12,811.80/x
  3. Step 3: Cross multiply
    26,693.40x = 39,992.10 × 12,811.80
  4. Step 4: Simplify right side
    26,693.40x = 512,370,786.78
  5. Step 5: Solve for x
    x = 512,370,786.78/26,693.40
  6. Step 6: Final answer
    x = 19,194.66

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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.