Home / 26,811.26-36,958.61-21,135.86

Finding the Fourth Proportional to 26,811.26, 36,958.61 and 21,135.86

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Solution

The fourth proportional to 26,811.26, 36,958.61 and 21,135.86 is: 29,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,811.26 : 36,958.61 = 21,135.86 : x
  2. Step 2: Convert to fraction form
    26,811.26/36,958.61 = 21,135.86/x
  3. Step 3: Cross multiply
    26,811.26x = 36,958.61 × 21,135.86
  4. Step 4: Simplify right side
    26,811.26x = 781,152,006.75
  5. Step 5: Solve for x
    x = 781,152,006.75/26,811.26
  6. Step 6: Final answer
    x = 29,135.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.