Home / 19,768.82-27,272.76-12,960.98

Finding the Fourth Proportional to 19,768.82, 27,272.76 and 12,960.98

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Solution

The fourth proportional to 19,768.82, 27,272.76 and 12,960.98 is: 17,880.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,768.82 : 27,272.76 = 12,960.98 : x
  2. Step 2: Convert to fraction form
    19,768.82/27,272.76 = 12,960.98/x
  3. Step 3: Cross multiply
    19,768.82x = 27,272.76 × 12,960.98
  4. Step 4: Simplify right side
    19,768.82x = 353,481,696.90
  5. Step 5: Solve for x
    x = 353,481,696.90/19,768.82
  6. Step 6: Final answer
    x = 17,880.77

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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.