Home / 13,147.60-19,714.68-3,912.40

Finding the Fourth Proportional to 13,147.60, 19,714.68 and 3,912.40

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Solution

The fourth proportional to 13,147.60, 19,714.68 and 3,912.40 is: 5,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.60 : 19,714.68 = 3,912.40 : x
  2. Step 2: Convert to fraction form
    13,147.60/19,714.68 = 3,912.40/x
  3. Step 3: Cross multiply
    13,147.60x = 19,714.68 × 3,912.40
  4. Step 4: Simplify right side
    13,147.60x = 77,131,714.03
  5. Step 5: Solve for x
    x = 77,131,714.03/13,147.60
  6. Step 6: Final answer
    x = 5,866.60

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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.