Home / 20,211.83-27,890.19-11,716.62

Finding the Fourth Proportional to 20,211.83, 27,890.19 and 11,716.62

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Solution

The fourth proportional to 20,211.83, 27,890.19 and 11,716.62 is: 16,167.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.83 : 27,890.19 = 11,716.62 : x
  2. Step 2: Convert to fraction form
    20,211.83/27,890.19 = 11,716.62/x
  3. Step 3: Cross multiply
    20,211.83x = 27,890.19 × 11,716.62
  4. Step 4: Simplify right side
    20,211.83x = 326,778,653.37
  5. Step 5: Solve for x
    x = 326,778,653.37/20,211.83
  6. Step 6: Final answer
    x = 16,167.69

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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.