Home / 13,129.39-19,687.69-4,361.34

Finding the Fourth Proportional to 13,129.39, 19,687.69 and 4,361.34

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Solution

The fourth proportional to 13,129.39, 19,687.69 and 4,361.34 is: 6,539.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.39 : 19,687.69 = 4,361.34 : x
  2. Step 2: Convert to fraction form
    13,129.39/19,687.69 = 4,361.34/x
  3. Step 3: Cross multiply
    13,129.39x = 19,687.69 × 4,361.34
  4. Step 4: Simplify right side
    13,129.39x = 85,864,789.19
  5. Step 5: Solve for x
    x = 85,864,789.19/13,129.39
  6. Step 6: Final answer
    x = 6,539.89

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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.