Home / 20,821.14-28,733.91-11,867.19

Finding the Fourth Proportional to 20,821.14, 28,733.91 and 11,867.19

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Solution

The fourth proportional to 20,821.14, 28,733.91 and 11,867.19 is: 16,377.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,821.14 : 28,733.91 = 11,867.19 : x
  2. Step 2: Convert to fraction form
    20,821.14/28,733.91 = 11,867.19/x
  3. Step 3: Cross multiply
    20,821.14x = 28,733.91 × 11,867.19
  4. Step 4: Simplify right side
    20,821.14x = 340,990,769.41
  5. Step 5: Solve for x
    x = 340,990,769.41/20,821.14
  6. Step 6: Final answer
    x = 16,377.14

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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.