Home / 12,727.80-18,998.72-11,789.82

Finding the Fourth Proportional to 12,727.80, 18,998.72 and 11,789.82

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Solution

The fourth proportional to 12,727.80, 18,998.72 and 11,789.82 is: 17,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,727.80 : 18,998.72 = 11,789.82 : x
  2. Step 2: Convert to fraction form
    12,727.80/18,998.72 = 11,789.82/x
  3. Step 3: Cross multiply
    12,727.80x = 18,998.72 × 11,789.82
  4. Step 4: Simplify right side
    12,727.80x = 223,991,489.03
  5. Step 5: Solve for x
    x = 223,991,489.03/12,727.80
  6. Step 6: Final answer
    x = 17,598.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.