Home / 12,766.12-17,617.38-7,177

Finding the Fourth Proportional to 12,766.12, 17,617.38 and 7,177

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Solution

The fourth proportional to 12,766.12, 17,617.38 and 7,177 is: 9,904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,766.12 : 17,617.38 = 7,177 : x
  2. Step 2: Convert to fraction form
    12,766.12/17,617.38 = 7,177/x
  3. Step 3: Cross multiply
    12,766.12x = 17,617.38 × 7,177
  4. Step 4: Simplify right side
    12,766.12x = 126,439,936.26
  5. Step 5: Solve for x
    x = 126,439,936.26/12,766.12
  6. Step 6: Final answer
    x = 9,904.34

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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.