Home / 13,638.83-20,455.96-3,779.11

Finding the Fourth Proportional to 13,638.83, 20,455.96 and 3,779.11

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Solution

The fourth proportional to 13,638.83, 20,455.96 and 3,779.11 is: 5,668.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.83 : 20,455.96 = 3,779.11 : x
  2. Step 2: Convert to fraction form
    13,638.83/20,455.96 = 3,779.11/x
  3. Step 3: Cross multiply
    13,638.83x = 20,455.96 × 3,779.11
  4. Step 4: Simplify right side
    13,638.83x = 77,305,323.00
  5. Step 5: Solve for x
    x = 77,305,323.00/13,638.83
  6. Step 6: Final answer
    x = 5,668.03

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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.