Home / 12,766.38-17,617.60-7,177.38

Finding the Fourth Proportional to 12,766.38, 17,617.60 and 7,177.38

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Solution

The fourth proportional to 12,766.38, 17,617.60 and 7,177.38 is: 9,904.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,766.38 : 17,617.60 = 7,177.38 : x
  2. Step 2: Convert to fraction form
    12,766.38/17,617.60 = 7,177.38/x
  3. Step 3: Cross multiply
    12,766.38x = 17,617.60 × 7,177.38
  4. Step 4: Simplify right side
    12,766.38x = 126,448,209.89
  5. Step 5: Solve for x
    x = 126,448,209.89/12,766.38
  6. Step 6: Final answer
    x = 9,904.78

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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.