Home / 13,429.75-20,129.42-6,842.02

Finding the Fourth Proportional to 13,429.75, 20,129.42 and 6,842.02

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Solution

The fourth proportional to 13,429.75, 20,129.42 and 6,842.02 is: 10,255.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.75 : 20,129.42 = 6,842.02 : x
  2. Step 2: Convert to fraction form
    13,429.75/20,129.42 = 6,842.02/x
  3. Step 3: Cross multiply
    13,429.75x = 20,129.42 × 6,842.02
  4. Step 4: Simplify right side
    13,429.75x = 137,725,894.23
  5. Step 5: Solve for x
    x = 137,725,894.23/13,429.75
  6. Step 6: Final answer
    x = 10,255.28

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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.