Home / 13,538.73-20,310.82-4,779.79

Finding the Fourth Proportional to 13,538.73, 20,310.82 and 4,779.79

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Solution

The fourth proportional to 13,538.73, 20,310.82 and 4,779.79 is: 7,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.73 : 20,310.82 = 4,779.79 : x
  2. Step 2: Convert to fraction form
    13,538.73/20,310.82 = 4,779.79/x
  3. Step 3: Cross multiply
    13,538.73x = 20,310.82 × 4,779.79
  4. Step 4: Simplify right side
    13,538.73x = 97,081,454.33
  5. Step 5: Solve for x
    x = 97,081,454.33/13,538.73
  6. Step 6: Final answer
    x = 7,170.65

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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.