Home / 26,379.28-39,599.88-20,836.72

Finding the Fourth Proportional to 26,379.28, 39,599.88 and 20,836.72

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Solution

The fourth proportional to 26,379.28, 39,599.88 and 20,836.72 is: 31,279.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,379.28 : 39,599.88 = 20,836.72 : x
  2. Step 2: Convert to fraction form
    26,379.28/39,599.88 = 20,836.72/x
  3. Step 3: Cross multiply
    26,379.28x = 39,599.88 × 20,836.72
  4. Step 4: Simplify right side
    26,379.28x = 825,131,611.59
  5. Step 5: Solve for x
    x = 825,131,611.59/26,379.28
  6. Step 6: Final answer
    x = 31,279.53

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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.