Home / 20,732.72-28,610.12-11,779.04

Finding the Fourth Proportional to 20,732.72, 28,610.12 and 11,779.04

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Solution

The fourth proportional to 20,732.72, 28,610.12 and 11,779.04 is: 16,254.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.72 : 28,610.12 = 11,779.04 : x
  2. Step 2: Convert to fraction form
    20,732.72/28,610.12 = 11,779.04/x
  3. Step 3: Cross multiply
    20,732.72x = 28,610.12 × 11,779.04
  4. Step 4: Simplify right side
    20,732.72x = 336,999,747.88
  5. Step 5: Solve for x
    x = 336,999,747.88/20,732.72
  6. Step 6: Final answer
    x = 16,254.49

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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.