Home / 12,726.80-18,997.23-11,788.82

Finding the Fourth Proportional to 12,726.80, 18,997.23 and 11,788.82

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Solution

The fourth proportional to 12,726.80, 18,997.23 and 11,788.82 is: 17,597.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726.80 : 18,997.23 = 11,788.82 : x
  2. Step 2: Convert to fraction form
    12,726.80/18,997.23 = 11,788.82/x
  3. Step 3: Cross multiply
    12,726.80x = 18,997.23 × 11,788.82
  4. Step 4: Simplify right side
    12,726.80x = 223,954,924.97
  5. Step 5: Solve for x
    x = 223,954,924.97/12,726.80
  6. Step 6: Final answer
    x = 17,597.11

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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.