Home / 12,841.20-17,725.44-7,999.92

Finding the Fourth Proportional to 12,841.20, 17,725.44 and 7,999.92

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Solution

The fourth proportional to 12,841.20, 17,725.44 and 7,999.92 is: 11,042.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,841.20 : 17,725.44 = 7,999.92 : x
  2. Step 2: Convert to fraction form
    12,841.20/17,725.44 = 7,999.92/x
  3. Step 3: Cross multiply
    12,841.20x = 17,725.44 × 7,999.92
  4. Step 4: Simplify right side
    12,841.20x = 141,802,101.96
  5. Step 5: Solve for x
    x = 141,802,101.96/12,841.20
  6. Step 6: Final answer
    x = 11,042.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.