Home / 12,485.25-17,229.65-7,179.95

Finding the Fourth Proportional to 12,485.25, 17,229.65 and 7,179.95

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Solution

The fourth proportional to 12,485.25, 17,229.65 and 7,179.95 is: 9,908.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.25 : 17,229.65 = 7,179.95 : x
  2. Step 2: Convert to fraction form
    12,485.25/17,229.65 = 7,179.95/x
  3. Step 3: Cross multiply
    12,485.25x = 17,229.65 × 7,179.95
  4. Step 4: Simplify right side
    12,485.25x = 123,708,032.69
  5. Step 5: Solve for x
    x = 123,708,032.69/12,485.25
  6. Step 6: Final answer
    x = 9,908.33

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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.