Home / 20,219.70-27,903.77-11,721.85

Finding the Fourth Proportional to 20,219.70, 27,903.77 and 11,721.85

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Solution

The fourth proportional to 20,219.70, 27,903.77 and 11,721.85 is: 16,176.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.70 : 27,903.77 = 11,721.85 : x
  2. Step 2: Convert to fraction form
    20,219.70/27,903.77 = 11,721.85/x
  3. Step 3: Cross multiply
    20,219.70x = 27,903.77 × 11,721.85
  4. Step 4: Simplify right side
    20,219.70x = 327,083,747.77
  5. Step 5: Solve for x
    x = 327,083,747.77/20,219.70
  6. Step 6: Final answer
    x = 16,176.49

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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.