Home / 12,825.21-17,696.79-7,159.66

Finding the Fourth Proportional to 12,825.21, 17,696.79 and 7,159.66

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Solution

The fourth proportional to 12,825.21, 17,696.79 and 7,159.66 is: 9,879.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825.21 : 17,696.79 = 7,159.66 : x
  2. Step 2: Convert to fraction form
    12,825.21/17,696.79 = 7,159.66/x
  3. Step 3: Cross multiply
    12,825.21x = 17,696.79 × 7,159.66
  4. Step 4: Simplify right side
    12,825.21x = 126,702,999.49
  5. Step 5: Solve for x
    x = 126,702,999.49/12,825.21
  6. Step 6: Final answer
    x = 9,879.21

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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.