Home / 12,825.75-17,699.56-7,236.75

Finding the Fourth Proportional to 12,825.75, 17,699.56 and 7,236.75

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Solution

The fourth proportional to 12,825.75, 17,699.56 and 7,236.75 is: 9,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825.75 : 17,699.56 = 7,236.75 : x
  2. Step 2: Convert to fraction form
    12,825.75/17,699.56 = 7,236.75/x
  3. Step 3: Cross multiply
    12,825.75x = 17,699.56 × 7,236.75
  4. Step 4: Simplify right side
    12,825.75x = 128,087,290.83
  5. Step 5: Solve for x
    x = 128,087,290.83/12,825.75
  6. Step 6: Final answer
    x = 9,986.73

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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.