Home / 20,270.85-27,974.25-12,717.48

Finding the Fourth Proportional to 20,270.85, 27,974.25 and 12,717.48

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Solution

The fourth proportional to 20,270.85, 27,974.25 and 12,717.48 is: 17,550.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.85 : 27,974.25 = 12,717.48 : x
  2. Step 2: Convert to fraction form
    20,270.85/27,974.25 = 12,717.48/x
  3. Step 3: Cross multiply
    20,270.85x = 27,974.25 × 12,717.48
  4. Step 4: Simplify right side
    20,270.85x = 355,761,964.89
  5. Step 5: Solve for x
    x = 355,761,964.89/20,270.85
  6. Step 6: Final answer
    x = 17,550.42

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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.