Home / 20,211.50-27,894.30-11,828

Finding the Fourth Proportional to 20,211.50, 27,894.30 and 11,828

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Solution

The fourth proportional to 20,211.50, 27,894.30 and 11,828 is: 16,324.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.50 : 27,894.30 = 11,828 : x
  2. Step 2: Convert to fraction form
    20,211.50/27,894.30 = 11,828/x
  3. Step 3: Cross multiply
    20,211.50x = 27,894.30 × 11,828
  4. Step 4: Simplify right side
    20,211.50x = 329,933,780.40
  5. Step 5: Solve for x
    x = 329,933,780.40/20,211.50
  6. Step 6: Final answer
    x = 16,324.06

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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.