Home / 13,129.74-19,695.60-3,769.70

Finding the Fourth Proportional to 13,129.74, 19,695.60 and 3,769.70

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Solution

The fourth proportional to 13,129.74, 19,695.60 and 3,769.70 is: 5,654.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.74 : 19,695.60 = 3,769.70 : x
  2. Step 2: Convert to fraction form
    13,129.74/19,695.60 = 3,769.70/x
  3. Step 3: Cross multiply
    13,129.74x = 19,695.60 × 3,769.70
  4. Step 4: Simplify right side
    13,129.74x = 74,246,404.84
  5. Step 5: Solve for x
    x = 74,246,404.84/13,129.74
  6. Step 6: Final answer
    x = 5,654.83

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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.