Home / 13,139.56-19,712.68-3,779.38

Finding the Fourth Proportional to 13,139.56, 19,712.68 and 3,779.38

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Solution

The fourth proportional to 13,139.56, 19,712.68 and 3,779.38 is: 5,670.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.56 : 19,712.68 = 3,779.38 : x
  2. Step 2: Convert to fraction form
    13,139.56/19,712.68 = 3,779.38/x
  3. Step 3: Cross multiply
    13,139.56x = 19,712.68 × 3,779.38
  4. Step 4: Simplify right side
    13,139.56x = 74,501,708.54
  5. Step 5: Solve for x
    x = 74,501,708.54/13,139.56
  6. Step 6: Final answer
    x = 5,670.03

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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.