Home / 13,128.60-19,691.04-3,769.44

Finding the Fourth Proportional to 13,128.60, 19,691.04 and 3,769.44

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Solution

The fourth proportional to 13,128.60, 19,691.04 and 3,769.44 is: 5,653.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.60 : 19,691.04 = 3,769.44 : x
  2. Step 2: Convert to fraction form
    13,128.60/19,691.04 = 3,769.44/x
  3. Step 3: Cross multiply
    13,128.60x = 19,691.04 × 3,769.44
  4. Step 4: Simplify right side
    13,128.60x = 74,224,193.82
  5. Step 5: Solve for x
    x = 74,224,193.82/13,128.60
  6. Step 6: Final answer
    x = 5,653.63

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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.