Home / 20,779.26-28,676.07-11,348.70

Finding the Fourth Proportional to 20,779.26, 28,676.07 and 11,348.70

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Solution

The fourth proportional to 20,779.26, 28,676.07 and 11,348.70 is: 15,661.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.26 : 28,676.07 = 11,348.70 : x
  2. Step 2: Convert to fraction form
    20,779.26/28,676.07 = 11,348.70/x
  3. Step 3: Cross multiply
    20,779.26x = 28,676.07 × 11,348.70
  4. Step 4: Simplify right side
    20,779.26x = 325,436,115.61
  5. Step 5: Solve for x
    x = 325,436,115.61/20,779.26
  6. Step 6: Final answer
    x = 15,661.58

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1.5x scale

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.