Home / 12,162.36-16,759.26-8,386.68

Finding the Fourth Proportional to 12,162.36, 16,759.26 and 8,386.68

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Solution

The fourth proportional to 12,162.36, 16,759.26 and 8,386.68 is: 11,556.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,162.36 : 16,759.26 = 8,386.68 : x
  2. Step 2: Convert to fraction form
    12,162.36/16,759.26 = 8,386.68/x
  3. Step 3: Cross multiply
    12,162.36x = 16,759.26 × 8,386.68
  4. Step 4: Simplify right side
    12,162.36x = 140,554,550.66
  5. Step 5: Solve for x
    x = 140,554,550.66/12,162.36
  6. Step 6: Final answer
    x = 11,556.52

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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.