Home / 17,005.80-25,458.30-12,642.60

Finding the Fourth Proportional to 17,005.80, 25,458.30 and 12,642.60

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Solution

The fourth proportional to 17,005.80, 25,458.30 and 12,642.60 is: 18,926.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,005.80 : 25,458.30 = 12,642.60 : x
  2. Step 2: Convert to fraction form
    17,005.80/25,458.30 = 12,642.60/x
  3. Step 3: Cross multiply
    17,005.80x = 25,458.30 × 12,642.60
  4. Step 4: Simplify right side
    17,005.80x = 321,859,103.58
  5. Step 5: Solve for x
    x = 321,859,103.58/17,005.80
  6. Step 6: Final answer
    x = 18,926.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.