Home / 20,732.26-28,610.58-11,779.78

Finding the Fourth Proportional to 20,732.26, 28,610.58 and 11,779.78

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Solution

The fourth proportional to 20,732.26, 28,610.58 and 11,779.78 is: 16,256.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.26 : 28,610.58 = 11,779.78 : x
  2. Step 2: Convert to fraction form
    20,732.26/28,610.58 = 11,779.78/x
  3. Step 3: Cross multiply
    20,732.26x = 28,610.58 × 11,779.78
  4. Step 4: Simplify right side
    20,732.26x = 337,026,338.07
  5. Step 5: Solve for x
    x = 337,026,338.07/20,732.26
  6. Step 6: Final answer
    x = 16,256.13

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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.