Home / 19,768.85-27,287.96-12,220.97

Finding the Fourth Proportional to 19,768.85, 27,287.96 and 12,220.97

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Solution

The fourth proportional to 19,768.85, 27,287.96 and 12,220.97 is: 16,869.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,768.85 : 27,287.96 = 12,220.97 : x
  2. Step 2: Convert to fraction form
    19,768.85/27,287.96 = 12,220.97/x
  3. Step 3: Cross multiply
    19,768.85x = 27,287.96 × 12,220.97
  4. Step 4: Simplify right side
    19,768.85x = 333,485,142.98
  5. Step 5: Solve for x
    x = 333,485,142.98/19,768.85
  6. Step 6: Final answer
    x = 16,869.23

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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.