Home / 20,161.85-27,821.79-11,207.93

Finding the Fourth Proportional to 20,161.85, 27,821.79 and 11,207.93

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Solution

The fourth proportional to 20,161.85, 27,821.79 and 11,207.93 is: 15,466.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.85 : 27,821.79 = 11,207.93 : x
  2. Step 2: Convert to fraction form
    20,161.85/27,821.79 = 11,207.93/x
  3. Step 3: Cross multiply
    20,161.85x = 27,821.79 × 11,207.93
  4. Step 4: Simplify right side
    20,161.85x = 311,824,535.69
  5. Step 5: Solve for x
    x = 311,824,535.69/20,161.85
  6. Step 6: Final answer
    x = 15,466.07

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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.