Home / 20,161.70-27,821.42-11,206.34

Finding the Fourth Proportional to 20,161.70, 27,821.42 and 11,206.34

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Solution

The fourth proportional to 20,161.70, 27,821.42 and 11,206.34 is: 15,463.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.70 : 27,821.42 = 11,206.34 : x
  2. Step 2: Convert to fraction form
    20,161.70/27,821.42 = 11,206.34/x
  3. Step 3: Cross multiply
    20,161.70x = 27,821.42 × 11,206.34
  4. Step 4: Simplify right side
    20,161.70x = 311,776,291.80
  5. Step 5: Solve for x
    x = 311,776,291.80/20,161.70
  6. Step 6: Final answer
    x = 15,463.79

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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.