Home / 12,162.49-18,249.40-11,965.93

Finding the Fourth Proportional to 12,162.49, 18,249.40 and 11,965.93

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Solution

The fourth proportional to 12,162.49, 18,249.40 and 11,965.93 is: 17,954.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,162.49 : 18,249.40 = 11,965.93 : x
  2. Step 2: Convert to fraction form
    12,162.49/18,249.40 = 11,965.93/x
  3. Step 3: Cross multiply
    12,162.49x = 18,249.40 × 11,965.93
  4. Step 4: Simplify right side
    12,162.49x = 218,371,042.94
  5. Step 5: Solve for x
    x = 218,371,042.94/12,162.49
  6. Step 6: Final answer
    x = 17,954.47

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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.