Home / 12,375.12-17,077.80-6,786.48

Finding the Fourth Proportional to 12,375.12, 17,077.80 and 6,786.48

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Solution

The fourth proportional to 12,375.12, 17,077.80 and 6,786.48 is: 9,365.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,375.12 : 17,077.80 = 6,786.48 : x
  2. Step 2: Convert to fraction form
    12,375.12/17,077.80 = 6,786.48/x
  3. Step 3: Cross multiply
    12,375.12x = 17,077.80 × 6,786.48
  4. Step 4: Simplify right side
    12,375.12x = 115,898,148.14
  5. Step 5: Solve for x
    x = 115,898,148.14/12,375.12
  6. Step 6: Final answer
    x = 9,365.42

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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.